Conducting SMPS troubleshooting is excruciatingly difficult, you're better off becoming a rocket scientist!
Alright, alright, I'm just joking…However, the fact remains that troubleshooting and fixing an SMPS unit is definitely not for the faint-hearted.
You see, most SMPS have very complicated circuitry architecture. And that's just for beginners…
A typical SMPS has almost a dozen circuit functions thus making things even more difficult for fledgling technicians! And don't get me started on the voltages and critical waveforms that involve several different segments of a SMPS.
I know all these stuff sounds pretty mind-boggling, however let me assure you that with adequate practice combined with the right SMPS troubleshooting guide, you'll eventually get everything down to a T!
And speaking of troubleshooting guide, there's one that will come in handy for anyone wishing to learn how to repair various switch mode power supplies. You can check it out by clicking here.
In the meantime, please take note of the following tips to ensure each and every troubleshooting case goes smoothly for you…
(A) Hone your sectional failure detection skill.
Learn to precisely identify SMPS sectional failure. This is a time-saving skill that you must acquire as soon as possible!
It'll save you a lot of time because once you're able to accurately detect which section is posing the problem, then you can simply direct all your focus and attention on that section alone.
Folks who are unable to identify sectional failure in a precise manner will wind up wasting a lot of precious time because they'll test every single section…Let me tell you, that's a very mind-numbing task!
(B) If there's a problem with the FET, DON'T simply toss out the power IC!
When I first got started on SMPS troubleshooting, one of the biggest mistakes I made was dumping away SMPS power ICs whenever I came across shorted FET located in the primary side.
Please do not make this mistake. If the power FET is shorted, then please make it a habit to inspect the power ICs thoroughly to find out if it's still working properly.
I believe in many shorted FET cases, the power ICs were never really affected. So how do you test the power ICs? Simple, just use a basic UC3842 IC tester.
(C) Hone your component testing skill.
This is another crucial, time-saving skill. Troubleshooting SMPS can be a real chore, especially if you're not familiar with a particular design. This means you have to test one component at a time!
Therefore, I suggest you hone your electrical component testing skill. Practice makes perfect after all. The better your testing skill, the faster you can complete the repairing task.
As I said, the right SMPS troubleshooting guide can do wonders for your repairing skills. It presents each repairing step in precise, photographic detail. If you need to download one, just follow this link: Downloadable SMPS Troubleshooting Guide
Showing posts with label how to troubleshoot smps. Show all posts
Showing posts with label how to troubleshoot smps. Show all posts
SMPS Problem – Top 5 Extremely Common SMPS Problems!
I started learning how to repair switch mode supplies (commonly abbreviated as SMPS) about a year ago. Thing were pretty rough initially. I couldn't fix a single SMPS problem at first!
However, I managed to buck up and improve my repairing skills after I chanced upon a highly detailed SMPS troubleshooting and service manual (you may click here for more info).
Since then, I've reconditioned numerous faulty SMPS! I dealt with a variety of SMPS problems and some of the EXTREMELY common ones are as follows:
Problem 1: Acidic Beverages
Now, you may be thinking, "say what? Acidic beverages can cause problems to SMPS? Are you high or something?"
Look, it's true! I've discovered many faulty SMPS units that were stained with coffee, cola, even fruit juice residue!
Acidic beverages – even in small amounts – can cause severe damage to an SMPS circuit board.
Problem 2: Combusted Coil
This problem can easily be detected if the burn marks are located on the outer/external section of the winding coil. However, if the internal loop is combusted then there are only two ways to detect this particular SMPS problem:
(a) Use your nose to smell the coil!
(b) Take out the blue ring tester and use it to confirm internal loop damage.
Problem 3: Decayed Glue
I find this problem most annoying. It's such a drag to scrape off decayed glue that has covered multiple SMPS components! The hardest part is that you have to do it in a very measured fashion or risk damaging the components' delicate outer layers.
Problem 4: Micro Crack
On large-sized components, micro cracks are quite noticeable. But they are not quite visible on smaller-sized components so you're going to need a magnifying glass to catch them!
Problem 5: Lack of User-Friendly Guide
This was a major problem for me. I wanted to learn SMPS repair but a complete, user-friendly guide on this subject was very hard to find!
Most SMPS repairing sites are laden with text. They are so boring and very hard to follow along…
See the real secret to learning how to troubleshoot and repair SMPS is by using a reference guide that is straightforward, full of step-by-step photos, illustrations, diagrams PLUS email support from an accomplished electronics technician/engineer.
That's how I got so good at fixing faulty SMPS! Through practice and by referring detailed guide that also comes with support via email.
And you too can fix all sorts of SMPS problems by using a detailed, step-by-step guide with email help which is presented at Manual for Solving Numerous SMPS Problems
Follow the link now for download details.
However, I managed to buck up and improve my repairing skills after I chanced upon a highly detailed SMPS troubleshooting and service manual (you may click here for more info).
Since then, I've reconditioned numerous faulty SMPS! I dealt with a variety of SMPS problems and some of the EXTREMELY common ones are as follows:
Problem 1: Acidic Beverages
Now, you may be thinking, "say what? Acidic beverages can cause problems to SMPS? Are you high or something?"
Look, it's true! I've discovered many faulty SMPS units that were stained with coffee, cola, even fruit juice residue!
Acidic beverages – even in small amounts – can cause severe damage to an SMPS circuit board.
Problem 2: Combusted Coil
This problem can easily be detected if the burn marks are located on the outer/external section of the winding coil. However, if the internal loop is combusted then there are only two ways to detect this particular SMPS problem:
(a) Use your nose to smell the coil!
(b) Take out the blue ring tester and use it to confirm internal loop damage.
Problem 3: Decayed Glue
I find this problem most annoying. It's such a drag to scrape off decayed glue that has covered multiple SMPS components! The hardest part is that you have to do it in a very measured fashion or risk damaging the components' delicate outer layers.
Problem 4: Micro Crack
On large-sized components, micro cracks are quite noticeable. But they are not quite visible on smaller-sized components so you're going to need a magnifying glass to catch them!
Problem 5: Lack of User-Friendly Guide
This was a major problem for me. I wanted to learn SMPS repair but a complete, user-friendly guide on this subject was very hard to find!
Most SMPS repairing sites are laden with text. They are so boring and very hard to follow along…
See the real secret to learning how to troubleshoot and repair SMPS is by using a reference guide that is straightforward, full of step-by-step photos, illustrations, diagrams PLUS email support from an accomplished electronics technician/engineer.
That's how I got so good at fixing faulty SMPS! Through practice and by referring detailed guide that also comes with support via email.
And you too can fix all sorts of SMPS problems by using a detailed, step-by-step guide with email help which is presented at Manual for Solving Numerous SMPS Problems
Follow the link now for download details.
How to Troubleshoot SMPS – 3 Systematic Tips for Troubleshooting Any SMPS
If you can't seem to figure out how to troubleshoot an SMPS, then you might want to take a breather, kick back for a moment and read this article.
See, I understand that troubleshooting and repairing switch mode power supplies is no walk in the park. Many fledgling technicians are overwhelmed by the complexity of SMPS circuit patterns.
But that's not going to happen to you!
I'm going to give some very helpful tips including tools selection, where to obtain the best and most complete guide on repairing SMPS, and a few common issues that you need to look out for when dealing with a faulty SMPS unit.
Alright, let's get down to business shall we?
1. Technician tools on how to troubleshoot SMPS…
Set up the necessary tools from the get-go. Of course the Ohmmeter is a must have a tool, but other devices have their place as well.
I recommend you get these tools: magnifying glass, isolation and variable transformer, oscilloscope, AC ammeter, capacitance meter and also a blue ring tester.
Extra tip: The blue ring tester is handy for discovering burnt coil that occurred within the internal winding section.
2. How to get the best manual for repairing SMPS?
I recommend getting a manual that's not overwhelmingly text-based. Photo-oriented instructions are the most ideal and if it comes with personal email help from an expert technician – that's even better!
By the way, you can actually download a deluxe photo instructional guide on how to troubleshoot SMPS including support via email. Simply Click Here to check it out.
3. Common issues that you might overlook…
(a) Hairline crack – Very easy to overlook this one especially if it occurs in small components such as power ICs or diodes. Use your X10 magnifying glass to locate those tiny cracks.
(b) Bulged Electrolytic Capacitors (EC) – Newbie technicians tend to overlook this problem. Actually, bulged ECs are very easy to discover and should be replaced even if your test meter indicates that they can still be used.
(c) Dry joints in the connector section – Always check for loose connection. You see, the multiple connector points are quite prone to dry joints.
Dry joints occurring in the connecter section will lead to loosening of wires and cables!
Anyway, if you still need a downloadable guide on how to troubleshoot SMPS in a step by detailed step fashion complete with full photos and illustrations, just follow this link: Learn How to Troubleshoot SMPS Step-By-Step Manual
See, I understand that troubleshooting and repairing switch mode power supplies is no walk in the park. Many fledgling technicians are overwhelmed by the complexity of SMPS circuit patterns.
But that's not going to happen to you!
I'm going to give some very helpful tips including tools selection, where to obtain the best and most complete guide on repairing SMPS, and a few common issues that you need to look out for when dealing with a faulty SMPS unit.
Alright, let's get down to business shall we?
1. Technician tools on how to troubleshoot SMPS…
Set up the necessary tools from the get-go. Of course the Ohmmeter is a must have a tool, but other devices have their place as well.
I recommend you get these tools: magnifying glass, isolation and variable transformer, oscilloscope, AC ammeter, capacitance meter and also a blue ring tester.
Extra tip: The blue ring tester is handy for discovering burnt coil that occurred within the internal winding section.
2. How to get the best manual for repairing SMPS?
I recommend getting a manual that's not overwhelmingly text-based. Photo-oriented instructions are the most ideal and if it comes with personal email help from an expert technician – that's even better!
By the way, you can actually download a deluxe photo instructional guide on how to troubleshoot SMPS including support via email. Simply Click Here to check it out.
3. Common issues that you might overlook…
(a) Hairline crack – Very easy to overlook this one especially if it occurs in small components such as power ICs or diodes. Use your X10 magnifying glass to locate those tiny cracks.
(b) Bulged Electrolytic Capacitors (EC) – Newbie technicians tend to overlook this problem. Actually, bulged ECs are very easy to discover and should be replaced even if your test meter indicates that they can still be used.
(c) Dry joints in the connector section – Always check for loose connection. You see, the multiple connector points are quite prone to dry joints.
Dry joints occurring in the connecter section will lead to loosening of wires and cables!
Anyway, if you still need a downloadable guide on how to troubleshoot SMPS in a step by detailed step fashion complete with full photos and illustrations, just follow this link: Learn How to Troubleshoot SMPS Step-By-Step Manual
Power Supply Troubleshooting – Exposing 3 Laser-Focused Tips for Troubleshooting Switch Mode Power Supply
Power supply troubleshooting is generally easy to do, but if it's the switch mode type, then prepare to pull your hair out in frustration!
You see, switch mode power supplies (SMPS) are not as easy to fix as the linear ones. Due to the complexity of SMPS circuit designs, many newbie technicians would shy away from working on them.
That's what I did when I first got into the electronics repairing business about a year ago.
Later, I managed to track down a copy of switch mode power supply troubleshooting manual that taught me how to repair a wide variety of SMPS in a bit-by-bit fashion.
I only wish I discovered that manual from the very beginning! Anyway you can click here to give it a look.
It's very detailed so might take some time for you to go through each chapter and repairing lesson.
In the meantime, I want to share with you a few laser-focused tips for troubleshooting any kind of SMPS.
Alright here we go…
Tip Number One
Now, this tip is going to sound very obvious, but it's worth emphasizing because a lot of novice technicians don't do this…
Learn to FULLY interpret schematic/block diagrams. Remember, the keyword here is…"fully". Don't study only specific parts of the diagrams - learn all of them!
This way, you'll be more flexible in dealing with various switch mode power supply troubleshooting and repairing problems.
Tip Number Two
Upon removing the casing of an SMPS unit, one of the first things that I would look for is dark or burnt-like areas. In many cases, a shorted component (due to excessive heat) would often darken its surrounding area.
Diodes like zener and schottky as well as power ICs are susceptible to this problem. So make sure you inspect those darken areas!
Tip Number Three
How is your sense of smell? Sorry…I ask you this because in order to detect a very common yet often overlooked SMPS problem, you need to have a rather keen sense of smell.
Burnt coil is a very common issue but it's not easy to detect if the damage occurs in the internal winding section. That's why you need to smell it!
However if your sense of smell is not working so well, don't worry…I can't smell very well either because I used to smoke for 15 years (just quit recently)!
Anyway, if smelling is a problem, then simply use the blue ring tester to determine if the internal winding part is burnt.
And once again, if you need more in-depth help in conducting switch mode power supply troubleshooting, just follow this link to get a detailed repair guide that's quite crammed with instructional photos.
You can actually download it direct to your computer so no shipping required. Go ahead and click this link.
You see, switch mode power supplies (SMPS) are not as easy to fix as the linear ones. Due to the complexity of SMPS circuit designs, many newbie technicians would shy away from working on them.
That's what I did when I first got into the electronics repairing business about a year ago.
Later, I managed to track down a copy of switch mode power supply troubleshooting manual that taught me how to repair a wide variety of SMPS in a bit-by-bit fashion.
I only wish I discovered that manual from the very beginning! Anyway you can click here to give it a look.
It's very detailed so might take some time for you to go through each chapter and repairing lesson.
In the meantime, I want to share with you a few laser-focused tips for troubleshooting any kind of SMPS.
Alright here we go…
Tip Number One
Now, this tip is going to sound very obvious, but it's worth emphasizing because a lot of novice technicians don't do this…
Learn to FULLY interpret schematic/block diagrams. Remember, the keyword here is…"fully". Don't study only specific parts of the diagrams - learn all of them!
This way, you'll be more flexible in dealing with various switch mode power supply troubleshooting and repairing problems.
Tip Number Two
Upon removing the casing of an SMPS unit, one of the first things that I would look for is dark or burnt-like areas. In many cases, a shorted component (due to excessive heat) would often darken its surrounding area.
Diodes like zener and schottky as well as power ICs are susceptible to this problem. So make sure you inspect those darken areas!
Tip Number Three
How is your sense of smell? Sorry…I ask you this because in order to detect a very common yet often overlooked SMPS problem, you need to have a rather keen sense of smell.
Burnt coil is a very common issue but it's not easy to detect if the damage occurs in the internal winding section. That's why you need to smell it!
However if your sense of smell is not working so well, don't worry…I can't smell very well either because I used to smoke for 15 years (just quit recently)!
Anyway, if smelling is a problem, then simply use the blue ring tester to determine if the internal winding part is burnt.
And once again, if you need more in-depth help in conducting switch mode power supply troubleshooting, just follow this link to get a detailed repair guide that's quite crammed with instructional photos.
You can actually download it direct to your computer so no shipping required. Go ahead and click this link.
Troubleshooting SMPS – 3 Winning Ways to Troubleshoot Faulty SMPS
My "SMPS repair mentor" said this to me: "restoring linear power supplies is easy, but troubleshooting SMPS is much, much more fun!"
I can't agree more with him. Indeed, troubleshooting and repairing switch mode power supplies is more fun, but I have to warn you though…
If you don't know what you're doing, then things will get very, very frustrating because the circuit designs in SMPS are quite complicated.
But don't you worry now…
I'm going to give you some essential tips for troubleshooting SMPS. These tips I learned from my repair mentor. You know, he actually created a step by detailed step manual on fixing SMPS.
The downloadable manual contains lots of easy to follow photo intensive instructions so if you're interested in it, just follow this link (new window).
Okay, no more rambling. Here are some essential tips to help you troubleshoot an SMPS unit successfully.
Note: I assume you already know how to read schematic diagrams of SMPS, and you know full well about each and every component in different types of SMPS. If you don't know all these, then I recommend you check out the link above.
First Tip
So you have a faulty SMPS on your repair table… First thing you should do is study that particular SMPS unit. Specifically, study its circuit design. Doing so enables you to approach the problem from various angles.
Second Tip
Get all the necessary tools ready. Most novice technicians would have a volt-ohm meter for testing purposes, but that's not sufficient!
I recommend other repairing and testing tools e.g. isolation and variable transformer, AC ammeter, blue ring and blue ESR meter and also oscilloscope.
Third Tip
Once you've removed the casing, I want you to monitor the components carefully. See, when troubleshooting SMPS, two of the most common problems I encountered were decayed glue and high voltage transformer that had too many dry joints.
Also if you're dealing with a faulty SMPS that uses controller IC, use your oscilloscope. It's ideal for high output voltage, power shutdown or power pulsating/blinking problems.
Trust me, troubleshooting SMPS is FUN but you definitely need a handy reference guide if you lack experience. Here's a 271 pages SMPS repairing guide which is full of easy to follow photographic instructions.
Go to this site for fast and easy access.
I can't agree more with him. Indeed, troubleshooting and repairing switch mode power supplies is more fun, but I have to warn you though…
If you don't know what you're doing, then things will get very, very frustrating because the circuit designs in SMPS are quite complicated.
But don't you worry now…
I'm going to give you some essential tips for troubleshooting SMPS. These tips I learned from my repair mentor. You know, he actually created a step by detailed step manual on fixing SMPS.
The downloadable manual contains lots of easy to follow photo intensive instructions so if you're interested in it, just follow this link (new window).
Okay, no more rambling. Here are some essential tips to help you troubleshoot an SMPS unit successfully.
Note: I assume you already know how to read schematic diagrams of SMPS, and you know full well about each and every component in different types of SMPS. If you don't know all these, then I recommend you check out the link above.
First Tip
So you have a faulty SMPS on your repair table… First thing you should do is study that particular SMPS unit. Specifically, study its circuit design. Doing so enables you to approach the problem from various angles.
Second Tip
Get all the necessary tools ready. Most novice technicians would have a volt-ohm meter for testing purposes, but that's not sufficient!
I recommend other repairing and testing tools e.g. isolation and variable transformer, AC ammeter, blue ring and blue ESR meter and also oscilloscope.
Third Tip
Once you've removed the casing, I want you to monitor the components carefully. See, when troubleshooting SMPS, two of the most common problems I encountered were decayed glue and high voltage transformer that had too many dry joints.
Also if you're dealing with a faulty SMPS that uses controller IC, use your oscilloscope. It's ideal for high output voltage, power shutdown or power pulsating/blinking problems.
Trust me, troubleshooting SMPS is FUN but you definitely need a handy reference guide if you lack experience. Here's a 271 pages SMPS repairing guide which is full of easy to follow photographic instructions.
Go to this site for fast and easy access.
SMPS Repair Tips – The 3 Fast and Easy Solutions That You Should Know Immediately
Having some trouble repairing SMPS?
Look, don't worry. See, I have prepared a few SMPS repair tips that might be of some use to you…
You know, I've had my share of frustration troubleshooting and fixing switch mode power supplies. Their circuit designs are a headache to deal with, unlike linear power supplies which are simpler and thus easier to fix.
Anyway, I've gotten used to them. It took a while but I'm all good now, thankfully. So if you really need some useful SMPS repair tips, then let's boogey now!
Tip 1 – The Easiest Solution…
The easiest solution is to get a really, really good guide on how to troubleshoot and repair SMPS. I know this sounds obvious, but fact of the matter is decent SMPS repair guides are very difficult to find.
Most are extremely complex, without step by detailed step instructions and photos. Therefore, you need to find a repair guide that's crammed full of easy to follow instructions, photos and diagrams.
You'll learn a lot quicker by using this kind of reference guide. Fortunately, there is such a guide which can be downloaded to your computer. You can check it out thru this link: SMPS Repairing Tips Action Manual
Tip 2 – The Analyzation Solution…
When you have a faulty SMPS unit lying on your repair table, the first thing you should do is examine the circuit design as much as possible. You have to analyze it carefully…
Doing so ensures that the possible reasons for malfunctioning can be detected quickly. Once you've ascertained which section of the SMPS is causing the problems, then the job is already half done!
And then you may pour all your energy and effort into fixing that problematic section. There is no need to waste time testing other sections that are actually functioning properly!
Tip 3 – The Electrolytics Solution…
Listen, I done quite a lot of SMPS repairing jobs lately and in MANY cases, the problem lies with the electrolytic output capacitors. They break down rather easily so checking them should be one of your first priorities. Thankfully they are super easy to replace.
Don't worry about it…As I said earlier, the easiest solution is to do the fixing work with the assistance of an easy to follow, photo instruction guide packed with practical SMPS repair tips..If you follow the steps carefully, you can learn how fix switch mode power supply within a week.
Go right now to this site for download information.
Look, don't worry. See, I have prepared a few SMPS repair tips that might be of some use to you…
You know, I've had my share of frustration troubleshooting and fixing switch mode power supplies. Their circuit designs are a headache to deal with, unlike linear power supplies which are simpler and thus easier to fix.
Anyway, I've gotten used to them. It took a while but I'm all good now, thankfully. So if you really need some useful SMPS repair tips, then let's boogey now!
Tip 1 – The Easiest Solution…
The easiest solution is to get a really, really good guide on how to troubleshoot and repair SMPS. I know this sounds obvious, but fact of the matter is decent SMPS repair guides are very difficult to find.
Most are extremely complex, without step by detailed step instructions and photos. Therefore, you need to find a repair guide that's crammed full of easy to follow instructions, photos and diagrams.
You'll learn a lot quicker by using this kind of reference guide. Fortunately, there is such a guide which can be downloaded to your computer. You can check it out thru this link: SMPS Repairing Tips Action Manual
Tip 2 – The Analyzation Solution…
When you have a faulty SMPS unit lying on your repair table, the first thing you should do is examine the circuit design as much as possible. You have to analyze it carefully…
Doing so ensures that the possible reasons for malfunctioning can be detected quickly. Once you've ascertained which section of the SMPS is causing the problems, then the job is already half done!
And then you may pour all your energy and effort into fixing that problematic section. There is no need to waste time testing other sections that are actually functioning properly!
Tip 3 – The Electrolytics Solution…
Listen, I done quite a lot of SMPS repairing jobs lately and in MANY cases, the problem lies with the electrolytic output capacitors. They break down rather easily so checking them should be one of your first priorities. Thankfully they are super easy to replace.
Don't worry about it…As I said earlier, the easiest solution is to do the fixing work with the assistance of an easy to follow, photo instruction guide packed with practical SMPS repair tips..If you follow the steps carefully, you can learn how fix switch mode power supply within a week.
Go right now to this site for download information.
Switching Power Supply Troubleshooting – Revealing 3 Key Tactics for Troubleshooting SMPS Quickly
Believe it or not, I love doing switching power supply troubleshooting! But it wasn't always like this in the beginning…
See, at first I didn't like troubleshooting SMPS units. Instead, I preferred working on linear power supplies because their circuit builds are a lot less intricate.
However, things have changed since I discovered the proper methods for restoring faulty SMPS. All it took was reading the right switching power supply repair manual AND…taking one step at a time.
So, if you're totally lost…then I suggest you pick up a copy of photo instructional SMPS repair guide presented via this link: Switch Power Supply Repair Info
On the other hand, if you're slightly stuck and need a just a little bit of help with your switching power supply troubleshooting work, then kindly take note of the following tactics…
Tactic 1:
Take out the schematic diagrams and analyze them properly. See the various circuit functions displayed – there are 11 in total. The more you know about them, the more likely you'll be able to pinpoint the source of problems.
It could be due to the oscillator circuit, the filtering circuit or perhaps, even the error detection circuit! So analyze each one in detail.
Tactic 2:
Of course you also need to properly scrutinize each component in the SMPS. The cause of failure may be attributed to battered electrolytic capacitors, faulty zener diodes etc.
Use the appropriate tester to assess suspected components. Grab an IC tester and assess the IC power accordingly. Is it working normally? How about the zener diodes? Have you tested them with your zener diode tester?
Tactic 3:
Remember, there are many of ways to conduct switching power supply troubleshooting so never limit yourself to just one particular method!
You see, I encountered all sorts of SMPS problems and so I use a variety of methods to tackle them.
Take the light bulb technique for example. This is a common method for repairing SMPS and it has multiple variations. Therefore, I would use the off, extremely bright or pulsating bulb technique depending on the problem…
You know, in most cases, the ideal way to conduct switching power supply trouble shooting, and ultimately repair it in the quickest time possible is by referring comprehensive step by detailed step repair manual.
There is one available and can be downloaded straight to your computer…So you don't have to wait for shipping. For precise details, just follow this link.
See, at first I didn't like troubleshooting SMPS units. Instead, I preferred working on linear power supplies because their circuit builds are a lot less intricate.
However, things have changed since I discovered the proper methods for restoring faulty SMPS. All it took was reading the right switching power supply repair manual AND…taking one step at a time.
So, if you're totally lost…then I suggest you pick up a copy of photo instructional SMPS repair guide presented via this link: Switch Power Supply Repair Info
On the other hand, if you're slightly stuck and need a just a little bit of help with your switching power supply troubleshooting work, then kindly take note of the following tactics…
Tactic 1:
Take out the schematic diagrams and analyze them properly. See the various circuit functions displayed – there are 11 in total. The more you know about them, the more likely you'll be able to pinpoint the source of problems.
It could be due to the oscillator circuit, the filtering circuit or perhaps, even the error detection circuit! So analyze each one in detail.
Tactic 2:
Of course you also need to properly scrutinize each component in the SMPS. The cause of failure may be attributed to battered electrolytic capacitors, faulty zener diodes etc.
Use the appropriate tester to assess suspected components. Grab an IC tester and assess the IC power accordingly. Is it working normally? How about the zener diodes? Have you tested them with your zener diode tester?
Tactic 3:
Remember, there are many of ways to conduct switching power supply troubleshooting so never limit yourself to just one particular method!
You see, I encountered all sorts of SMPS problems and so I use a variety of methods to tackle them.
Take the light bulb technique for example. This is a common method for repairing SMPS and it has multiple variations. Therefore, I would use the off, extremely bright or pulsating bulb technique depending on the problem…
You know, in most cases, the ideal way to conduct switching power supply trouble shooting, and ultimately repair it in the quickest time possible is by referring comprehensive step by detailed step repair manual.
There is one available and can be downloaded straight to your computer…So you don't have to wait for shipping. For precise details, just follow this link.
SMPS Repairing Guide – Top 10 Most Important Things to Look Out For!
Are you looking for a top-quality SMPS repairing guide?
It's not easy to find a decent guide on fixing switch mode power supply. Most of them are jammed with complicated instructions, making it very hard for beginner and intermediate technicians to follow along.
So to help you select the best SMPS repairing guide, here are 10 important things that you need to look for out…
(1) The repair guide or manual must provide full information on SMPS components written in a straightforward style. So many SMPS manuals out there provide headache inducing info!
(2) It should clearly explain to you how switch mode power supply really works, including in-depth info on ATX power supplies and the power of Mosfet technology.
(3) Repair guide/manual must contain precise schematic diagram along with detailed analysis on the function of each area/section of SMPS.
(4) A good quality guide should help you take the guesswork out of fixing switch mode power supplies by telling you vital details about critical waveforms, and voltages located in various part of an SMPS unit.
(5) Must provide accurate information on all circuit functions of SMPS. This is important because many SMPS repairing guide covers just 1 or 2 circuit functions. Not good! You should learn about all of them.
(6) Includes several valuable case studies for analysis and improvement.
(7) Provides detailed safety guidelines on fixing switch mode power supplies.
(8) Teaches you exactly how to isolate problems thru multiple approaches. If you want to really excel at troubleshooting and repairing SMPS, then you need to sharpen your ‘problem isolation' skill. This skill will enable you to accurately identify the cause of problems in minimal time.
(9) It should show you precisely how to conduct voltage testing on SMPS circuit in the safest and easiest manner.
(10) Email consulting is a must! Yes, the ideal repair manual must include email help from expert author. This is how I greatly improve my repairing skills - by following step-by-step instructions and seeking extra help from an expert via email.
BONUS TIP: In order to find an SMPS repairing guide that fulfills these criteria, you can go to this website.
Just click on the link and a new window will open. Good luck!
It's not easy to find a decent guide on fixing switch mode power supply. Most of them are jammed with complicated instructions, making it very hard for beginner and intermediate technicians to follow along.
So to help you select the best SMPS repairing guide, here are 10 important things that you need to look for out…
(1) The repair guide or manual must provide full information on SMPS components written in a straightforward style. So many SMPS manuals out there provide headache inducing info!
(2) It should clearly explain to you how switch mode power supply really works, including in-depth info on ATX power supplies and the power of Mosfet technology.
(3) Repair guide/manual must contain precise schematic diagram along with detailed analysis on the function of each area/section of SMPS.
(4) A good quality guide should help you take the guesswork out of fixing switch mode power supplies by telling you vital details about critical waveforms, and voltages located in various part of an SMPS unit.
(5) Must provide accurate information on all circuit functions of SMPS. This is important because many SMPS repairing guide covers just 1 or 2 circuit functions. Not good! You should learn about all of them.
(6) Includes several valuable case studies for analysis and improvement.
(7) Provides detailed safety guidelines on fixing switch mode power supplies.
(8) Teaches you exactly how to isolate problems thru multiple approaches. If you want to really excel at troubleshooting and repairing SMPS, then you need to sharpen your ‘problem isolation' skill. This skill will enable you to accurately identify the cause of problems in minimal time.
(9) It should show you precisely how to conduct voltage testing on SMPS circuit in the safest and easiest manner.
(10) Email consulting is a must! Yes, the ideal repair manual must include email help from expert author. This is how I greatly improve my repairing skills - by following step-by-step instructions and seeking extra help from an expert via email.
BONUS TIP: In order to find an SMPS repairing guide that fulfills these criteria, you can go to this website.
Just click on the link and a new window will open. Good luck!
Troubleshooting of SMPS – Learn Proven Tactics for Quick SMPS Troubleshooting
Troubleshooting of SMPS (switch mode power supply) is a lot more difficult than that of linear power supply…is this true?
Not really! With the right reparation reference guide and of course some practice, you'll be able to troubleshoot and repair SMPS with very little trouble.
You know, I only learned how to fix SMPS not very long ago. Although the first few repair cases were quite frustrating, I soon got the hang of it and began troubleshooting of SMPS and repairing them successfully…like a seasoned veteran!
So, I thought I'd share a couple of SMPS repair tips for the benefit of those who are still uncertain about how to conduct the proper troubleshooting process.
And speaking of, "reparation reference guide"…you will do well to get one that are in-depth, easy to understand and packed with step-by-step photos. I found one via this link :Info on SMPS Repair (Note: new window will open)
Now without further ado, here are a couple of proven tactics to assist you in troubleshooting of SMPS:
Help tip #1.
Examine the outputs located in the secondary area of your SMPS. Understand this: SMPS units are built with different number of outputs. Each one linked to a single circuit.
If an electric circuit occurs in one or more components/circuits, the power supply will shut down due to the increase of voltage supply. So, be sure to inspect the outputs in secondary area extensively.
Help tip #2.
If the fuse keeps blowing, then you should take a careful look at the diodes especially the zener ones (they are susceptible to burn out).
If problem persists after replacing the diodes, then you need to inspect the transformer or other components located downstream. They might be drawing excessive current.
To avoid changing fuse (in the event of power surge/ too much current pull), you should try linking a 100 watt bulb in series with the main fuse.
Fortunately, all the above and more repairing solutions can be obtained from an advice-jammed guide with full instructional photos.
You'll pretty much learn everything from A to Z including troubleshooting of SMPS, understanding waveforms, voltages, schematic diagram, building your own diode and IC power tester and various repair instructions.
Go here for download details.
No need to wait for the 200 page photo-based repair manual to be shipped to your doorstep, just download, print and bind them for easy reference
Not really! With the right reparation reference guide and of course some practice, you'll be able to troubleshoot and repair SMPS with very little trouble.
You know, I only learned how to fix SMPS not very long ago. Although the first few repair cases were quite frustrating, I soon got the hang of it and began troubleshooting of SMPS and repairing them successfully…like a seasoned veteran!
So, I thought I'd share a couple of SMPS repair tips for the benefit of those who are still uncertain about how to conduct the proper troubleshooting process.
And speaking of, "reparation reference guide"…you will do well to get one that are in-depth, easy to understand and packed with step-by-step photos. I found one via this link :Info on SMPS Repair (Note: new window will open)
Now without further ado, here are a couple of proven tactics to assist you in troubleshooting of SMPS:
Help tip #1.
Examine the outputs located in the secondary area of your SMPS. Understand this: SMPS units are built with different number of outputs. Each one linked to a single circuit.
If an electric circuit occurs in one or more components/circuits, the power supply will shut down due to the increase of voltage supply. So, be sure to inspect the outputs in secondary area extensively.
Help tip #2.
If the fuse keeps blowing, then you should take a careful look at the diodes especially the zener ones (they are susceptible to burn out).
If problem persists after replacing the diodes, then you need to inspect the transformer or other components located downstream. They might be drawing excessive current.
To avoid changing fuse (in the event of power surge/ too much current pull), you should try linking a 100 watt bulb in series with the main fuse.
Fortunately, all the above and more repairing solutions can be obtained from an advice-jammed guide with full instructional photos.
You'll pretty much learn everything from A to Z including troubleshooting of SMPS, understanding waveforms, voltages, schematic diagram, building your own diode and IC power tester and various repair instructions.
Go here for download details.
No need to wait for the 200 page photo-based repair manual to be shipped to your doorstep, just download, print and bind them for easy reference
SMPS Problems – List of Small Problems and The Biggest Problem for Novice Technicians
I've fixed all kinds of SMPS problems – both minor and major ones. And in all cases, I would isolate the problem as soon as possible. I suggest you do the same.
You must be able to identify exactly which section of the SMPS is causing the issue. You'll save a LOT of time this way!
Now, if you have an SMPS that isn't working, I think the source of problem can be attributed to the following:
Damaged SMPS components…
Inspect every section carefully to see if there's any broken/loose/totally detached component. Look at the primary section. Is the power IC working correctly?
Take out your UC3842 IC Tester unit to measure the power IC. Damaged capacitors is also one the most common SMPS problems so check those as well.
Main circuit board problems…
Noticed the power supply LED blinking/dim/ shutdown? If yes, then you should measure each component in the main area of SMPS. Aside from the main section; do check the secondary area as well.
Fan problem…
Trying to repair an ATX switch mode power supply? Inspect the fan! The fan is vital for sucking heat from the components. If the fan doesn't work properly, then excessive heat will occur, resulting in complete shutdown of your ATX SMPS.
Soldering problem…
Well, this is definitely not one of the most common SMPS problems around…. However, fairly big sized components can be found in most switch mode power supplies and soldering them can be rather difficult.
So, just check the solder connections too if you find nothing wrong with the components…
If you need to make adjustments to the connections and you're not too confident of doing so, then I suggest you test your soldering skill on a dummy circuit board first.
The Biggest problem for Novice technicians
The circuit design of switch mode power supplies is more complex than their linear counterparts. And to worsen matters, there is a serious lack of ‘take-you-by-the-hand' guides on how to troubleshoot and repair SMPS in the proper manner.
This I believe is the biggest problem for novice technicians. I know, because I went through the same experience.
Now, you can avoid this problem by visiting a website called SMPS repair information. I think the exact link is right here.
That's where I discovered a thick downloadable manual with step-by-step photos on solving various SMPS problems. Go ahead and follow the above link if you're interested in downloading it.
You must be able to identify exactly which section of the SMPS is causing the issue. You'll save a LOT of time this way!
Now, if you have an SMPS that isn't working, I think the source of problem can be attributed to the following:
Damaged SMPS components…
Inspect every section carefully to see if there's any broken/loose/totally detached component. Look at the primary section. Is the power IC working correctly?
Take out your UC3842 IC Tester unit to measure the power IC. Damaged capacitors is also one the most common SMPS problems so check those as well.
Main circuit board problems…
Noticed the power supply LED blinking/dim/ shutdown? If yes, then you should measure each component in the main area of SMPS. Aside from the main section; do check the secondary area as well.
Fan problem…
Trying to repair an ATX switch mode power supply? Inspect the fan! The fan is vital for sucking heat from the components. If the fan doesn't work properly, then excessive heat will occur, resulting in complete shutdown of your ATX SMPS.
Soldering problem…
Well, this is definitely not one of the most common SMPS problems around…. However, fairly big sized components can be found in most switch mode power supplies and soldering them can be rather difficult.
So, just check the solder connections too if you find nothing wrong with the components…
If you need to make adjustments to the connections and you're not too confident of doing so, then I suggest you test your soldering skill on a dummy circuit board first.
The Biggest problem for Novice technicians
The circuit design of switch mode power supplies is more complex than their linear counterparts. And to worsen matters, there is a serious lack of ‘take-you-by-the-hand' guides on how to troubleshoot and repair SMPS in the proper manner.
This I believe is the biggest problem for novice technicians. I know, because I went through the same experience.
Now, you can avoid this problem by visiting a website called SMPS repair information. I think the exact link is right here.
That's where I discovered a thick downloadable manual with step-by-step photos on solving various SMPS problems. Go ahead and follow the above link if you're interested in downloading it.
SMPS Repairing – How the Experts Repair SMPS Units
Want to know how to repair a switch mode power supply unit (SMPS)?
Okay first you must understand this: proper SMPS repairing procedure needs to be followed; otherwise you may diagnose a particular problem incorrectly.
Trust me; you absolutely do not want to commit incorrect diagnosis…I made this mistake and it turned out to be very costly!
Fortunately, I stumbled across a download only SMPS repairing guide which has helped sharpen my troubleshooting skills.
Thank goodness because I do not want to make the same mistake – wrong diagnosis is something I try to avoid at all cost!
By the way, you can learn more about the SMPS repairing guide by visiting this site. I think another window will open so take note…
Look, I've since discovered that fixing SMPS is really not that difficult. I've followed the steps outlined in that repair guide (written by an expert) numerous times AND I've applied what I learned to great success.
You know, a lot of experts successfully repair SMPS by…
…Fully understanding the basics of switch mode power supply. They know all about the components found in every section of SMPS units, how the entire unit functions and so on.
…Pinpointing the actual problem based on proper schematic diagram reviewing, and comprehending the critical waveforms and exact voltages of every section available in SMPS.
…Discovering the right output voltages and using the appropriate testers to examine the functionality of each SMPS component. For example, you can use a zener diode tester to identify possible problems occurring on other components – not just the zener diodes!
...Using several different approaches for repairing SMPS. In order to troubleshoot various types of SMPS, an expert may employ several different methods.
You see, once you understand how the unit works the function of each component, circuit design data, multiple repairing process etc, you'll soon realize that it's quite fun to fix SMPS.
What you should do is get a comprehensive manual on SMPS repairing (ideally one with full color photo demonstrations and step-by-step tutorials), you'll learn a lot quicker if you follow this type of manual in a bit-by-bit fashion.
You can find that kind of manual by clicking right on this link.
Okay first you must understand this: proper SMPS repairing procedure needs to be followed; otherwise you may diagnose a particular problem incorrectly.
Trust me; you absolutely do not want to commit incorrect diagnosis…I made this mistake and it turned out to be very costly!
Fortunately, I stumbled across a download only SMPS repairing guide which has helped sharpen my troubleshooting skills.
Thank goodness because I do not want to make the same mistake – wrong diagnosis is something I try to avoid at all cost!
By the way, you can learn more about the SMPS repairing guide by visiting this site. I think another window will open so take note…
Look, I've since discovered that fixing SMPS is really not that difficult. I've followed the steps outlined in that repair guide (written by an expert) numerous times AND I've applied what I learned to great success.
You know, a lot of experts successfully repair SMPS by…
…Fully understanding the basics of switch mode power supply. They know all about the components found in every section of SMPS units, how the entire unit functions and so on.
…Pinpointing the actual problem based on proper schematic diagram reviewing, and comprehending the critical waveforms and exact voltages of every section available in SMPS.
…Discovering the right output voltages and using the appropriate testers to examine the functionality of each SMPS component. For example, you can use a zener diode tester to identify possible problems occurring on other components – not just the zener diodes!
...Using several different approaches for repairing SMPS. In order to troubleshoot various types of SMPS, an expert may employ several different methods.
You see, once you understand how the unit works the function of each component, circuit design data, multiple repairing process etc, you'll soon realize that it's quite fun to fix SMPS.
What you should do is get a comprehensive manual on SMPS repairing (ideally one with full color photo demonstrations and step-by-step tutorials), you'll learn a lot quicker if you follow this type of manual in a bit-by-bit fashion.
You can find that kind of manual by clicking right on this link.
Repair SMPS – Learn How to Repair Switch Mode Power Supplies Like the Pros!
If you want learn how to repair smps like the pros, let me offer some tips that can help you out immensely…
See, I've fixed a fair share of linear power supplies. They were pretty easy to fix but switch mode power supplies?
Well, to be honest…I had quite a hard time troubleshooting my first smps case. At the time, I had no prior experience fixing a smps and I found the circuit design to be rather complex.
Smps circuit design is so much different than the linear ones! Anyway, I managed to track down a downloadable manual on how to troubleshoot and repair smps so that made things a lot easier for me.
Now I can pretty much fix all types of switch mode power supply.
By the way, you can visit this site for more details on that repair manual(a new window will open).
Now, if you're ready to repair smps like the pros, then take note of these tips:
Tip 1: Learn how to read schematic diagram and understand the function of each component a.s.a.p! Knowing these will help you better isolate the possible causes of failure, therefore allowing you to complete the repairing process in an efficient manner.
Tip 2: Most smps problems are down to faulty filter capacitors, blown fuse etc. One of the things that you should check is decayed glue covering the fragile components.
This is a very common problem and can be solved by removing decayed glue from the components in a layer-by-layer fashion. Do it carefully to avoid damaging the components.
Tip 3: Should you encounter a problem that requires soldering, ensure you use a low watt soldering iron with very fine tip for small components.
For bigger components, use a higher watt soldering iron – maybe get a mini soldering gun to make things easier.
Listen, the best way to repair smps problems (if you have minimal experience) is to follow clearly explained instructions that helps you every step of the way.
Refer this photo based instructional manual. Follow the steps so you'll quickly learn how to fix all kinds of switch mode power supply.
Follow this link right here to obtain download details for this instructional manual.
See, I've fixed a fair share of linear power supplies. They were pretty easy to fix but switch mode power supplies?
Well, to be honest…I had quite a hard time troubleshooting my first smps case. At the time, I had no prior experience fixing a smps and I found the circuit design to be rather complex.
Smps circuit design is so much different than the linear ones! Anyway, I managed to track down a downloadable manual on how to troubleshoot and repair smps so that made things a lot easier for me.
Now I can pretty much fix all types of switch mode power supply.
By the way, you can visit this site for more details on that repair manual(a new window will open).
Now, if you're ready to repair smps like the pros, then take note of these tips:
Tip 1: Learn how to read schematic diagram and understand the function of each component a.s.a.p! Knowing these will help you better isolate the possible causes of failure, therefore allowing you to complete the repairing process in an efficient manner.
Tip 2: Most smps problems are down to faulty filter capacitors, blown fuse etc. One of the things that you should check is decayed glue covering the fragile components.
This is a very common problem and can be solved by removing decayed glue from the components in a layer-by-layer fashion. Do it carefully to avoid damaging the components.
Tip 3: Should you encounter a problem that requires soldering, ensure you use a low watt soldering iron with very fine tip for small components.
For bigger components, use a higher watt soldering iron – maybe get a mini soldering gun to make things easier.
Listen, the best way to repair smps problems (if you have minimal experience) is to follow clearly explained instructions that helps you every step of the way.
Refer this photo based instructional manual. Follow the steps so you'll quickly learn how to fix all kinds of switch mode power supply.
Follow this link right here to obtain download details for this instructional manual.
Subscribe to:
Posts (Atom)