Every other computer part connects to the motherboard. Repairing computer motherboard electronics repair and. Nov 01, 2007 very often when i attempt to repair electronic devices, either mine or from friends, i find out the problem is with the power supply which these days is most often a switched mode power supply smps. Actually, ive downloaded a couple of pdf repair guides but they werent much help. Switchmode power supply troubleshooting safety the primary danger to you is from the input side of the supply which is directly connected to the ac line and will have large electrolytic capacitors with 320 v or greater dc when powered often, even if the supply does not work correctly and for some time after being unplugged especially. Troubleshooting and repairing switch mode power supplies. Get the premium a must have smps switch mode powersupply repair ebook. Computer smps service manual detailed information on. Most of them are flyback, regulated, smps but not all.
Over time many technicians battle to succeed in switch mode power repairs and in the end quit in frustration. Oct 09, 2017 in this video i show how to repair an atx computer power supply and what are the most common failures. If you need a computer smps service manual, then allow me to share with you a few tips to ensure you get only the best quality manual. Aug 25, 2019 after 2 year of usage, smps is getting damaged frequently. Sep 16, 2018 straight up, a downloadable smps repair book chockfull of repairing tips and stepbystep pictures will definitely help you a great deal. Computer hardware repairs and maintenance presentaon by akusa peter aker. I know its not easy to find a highquality manual for servicing and repairing switch mode power supplies or smps.
When i opened the smps and inspected, its input side, fuse is blown, mosfet is short circuited and one resistor, and one diode is damaged. The lowvoltage supply provides four output voltages. Smps troubleshooting electronics repair guide and troubleshooting techniques. The motherboard is the most important part of a computer. How to repair a switchmodepowersupply smps homemade.
The power supply fault could be an open start up resistor only or could be even more than ten components burnt due to heavy lightning strike. In this video i show how to repair an atx computer power supply and what are the most common failures. Components are fed with high voltage, they get warm, they age quickly because of the full time operation and when there is a surge, the smps is the first stage concerned. Ebook computer smps circuit diagram pdf the complaint of this atx power supplies was no power. Switching power supply technical manual chapter 1 introduction to power supply 1. In various earlier articles in this blog only i have told you about its importance and how to find a good power supply for your pc. When the power supply was switched on, measurements were taken. If the motherboard does not work, none of the other parts will either. Product compare 0 aerocool vx plus 450 smps 450 watt psu. Sometimes chips may get shorted, in that case one has to forcefully power on smps by shorting green and black wire of smps and look for any overheated chips. Sometimes in smps repair, you just dont know where the problem lies. Be sure to check c16, the local bulk vcc cap that is normally supplied from both a resistor dropper from the hv supply and a flyback winding on the primary side of the transformer.
This about smps repair guide in this case is ebook smps design pdf pdf was post on. When connecting the smps only to the transformer, you can measure on the primary side of the smps, but when you connect the ground lead of your scope, this will reference that part of the smps to ground, which means all other parts of the smps parts that you would not always expect will be floating on 230vac voltage for example the dc. Jan 12, 20 this point about smps repair in this case is ebook electronic repair pdf was post on. This comprehensive manual will show you stepbystep with clearly explained instructions, and detailed photos on how to repair smps so youll learn quicker and save time. Very often when i attempt to repair electronic devices, either mine or from friends, i find out the problem is with the power supply which these days is most often a switched mode power supply smps. After 2 year of usage, smps is getting damaged frequently. Nov 20, 2017 discover how to repair smps power supply using a super crazy detailed tutorial manual for troubleshooting all sorts of smps problems. Its true that most people who make an effort to start repair in switch mode power wind up quitting because they dont get instantaneous. If you need a detailed guide to assist you strike the floor running, you will find a downloadable one particular by clicking on the url right at the bottom as soon as ive. Secrets of smps repair and troubleshooting the fast way.
Dont waste anymore of your precious time to search from the internet to learn the basic repair. These are the few basic techniques of chip level motherboard repair. Ebook electronics repair pdf 35 people recommend this. Mode power supply reference manual should prove useful. Most computer chips in modern computers require power in the general neighborhood of 1.
Buy intex smps techno 450 ups sliver online at low price in india on. See more ideas about switched mode power supply, case histories and this or that questions. This provision about how to repair smps guide in this case is ebook computer smps circuit diagram pdf was post on. Smps repair guide switch mode power supply repairing tips. Also i have stated many times the importance of amount of current on 12v rail of a smps psu. Also i have stated many times the importance of amount of. This reference manual contains useful background information on switching power supplies for those who want to have more meaningful discussions and are not necessarily experts on power supplies. A switch mode power supply, also known as switcher, is a power supply device that is used to convert the volt and current features in one form to another. My brotherinlaws selfbuilt computer had a really lowend thermaltake psu. Smps offers advantages in terms of size, weight, cost, efficiency and overall performance. Switching mode power supply smps is an electronic power supply. It runs on the switching regulator to be better in its function. How to repair a computer power supply or other switching.
Features best value power supply for entrylevel system builders. Switch mode power supplies 271 pages, please visit. Upgraded transformer improves balance between 12v add to wish list. Computer smps service manual detailed information on finding gold quality smps repair manual. Supply technical manual based on our 22year experiences in designing, manufacturing, and selling switching power supplies as well as the latest safety regulations and textbooks. Power supply repair, schematic diagrams 0 gadgets like electronic toys and musical players commonly use 1. You can learn how to repair smps of a wide variety of electronic items in 7 days or less. Repairing switched mode power supplies smps all about. Most of these tips can apply to any switch mode power supply smps. Im jestine yong and im an expert electronic repairer. Click here to learn dvd player repair by humphrey click here to learn how to repair lcd monitors with the help of 10 true repair case histories. It also provides real smps examples, and identifies several application notes and. Straight up, a downloadable smps repair book chockfull of repairing tips and stepbystep pictures will definitely help you a great deal. This provision about pdf how to repair lcd tv smps posted by mark, one of our free article writer.
Secrets of smps repair and troubleshooting switch mode power supply smps repair sometimes can be easy and sometimes are quite difficult to solve the problem. May 10, 2012 ebook computer smps circuit diagram pdf. Free smps books download free smps ebooks online smps tutorials pdf guidessmps tutorials downloadable ebooks downloads zip chm rar more and. Jun 16, 2012 ebook computer smps circuit diagram pdf. Basically, it is a device in which energy conversion and regulation is provided by power semiconductors that are continuously switching on and off with high frequency.
A dummy load can be made from a couple lamps that you can buy at any auto parts store and an extension cable from radio shack. Many problems with our home appliances are due to smps faults. I am jestine yong and i am a specialist electronic repairer. As usual one has to remove the 4 screws in order to remove the top. The ultimate computer repair guide hardware that is not part of the system unit is sometimes called a peripheral device or device. In this ebook, you will learn all my advance troubleshooting and repairing secrets and you can become a professional in switch mode power supplies repair. Click here to read testimonial and buy the smps repair ebook. Do you know that we could have wasted lots of money simply by replacing the power ic without knowing it whether it has problem or not. The shown burnt smps can be repaired with the following simple steps. These have become an accepted part of electronics gadgets. So, i summarized in this page the basic ideas and the tricks that i use the most. Youll get better soon after finishing a number of smps repair situations. Symptoms or signs to change your computer smps psu.
Switchmode power supply troubleshooting safety the primary danger to you is from the input side of the supply which is directly connected to the ac line and will have large electrolytic capacitors with 320 v or greater dc when powered often, even if the supply does not work correctly and for some time after being unplugged especially if the power. An1094 application note solution for offline smps using viper100e introduction the present board prototype is a widerange input offline 50 w single switch flyback, working at. Click here to learn lcd tv repair secrets by damon. Download smps atx d atx smps computer repair desktop computer,server,tablet pc,laptop, network equipment, printers service manuals and information.
352 449 972 1526 493 246 1500 544 38 1503 217 1638 1161 1288 1120 687 1510 277 1594 298 1384 832 1306 1608 1516 376 873 1461 1089 557 1388 1581 356 1491 1356 783 457 1489 58 200 819 1297 1416 851 522