PC ATX SMPS Saved From Dump With Almost No Cost For Repairs
This Computer SMPS was brought to me in dead condition. After thorough cleaning of inside, including the fan, I checked the circuit using ESR meter and Ring Tester. Everything was found ok. There were no strained components or any visual damages. But there were plenty of dry solders. Some of the pins were just holding on!
So, I straightaway went for patching up the entire board with fresh solder. Then cleaned up the PCB using IPL thoroughly. Then when I checked, the SMPS was back to work in full swing, bringing a smile! Satisfaction, therefore, got collected to its bag!
This article was prepared for you by Parasuraman Subramanian from India. He is 71 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.
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You may check on his previous repair article below:
https://jestineyong.com/backlight-replacement-in-sony-bravia-led-tv-model-w60b/
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Waleed Rishmawi
March 23, 2021 at 6:18 pm
soldering joints a really fun stuff to do just make sure you are working in a ventilated area when doing this amount of soldering. I built my own fume extractor and working amazingly so far. have a blessed day
Tayo
March 23, 2021 at 9:30 pm
Well done Sir. Just for clarification... what is the IPL solution you used to clean the board? Is it a derivative of IPA (Isopropyl Alcohol)?
Albert van Bemmelen
March 23, 2021 at 10:24 pm
Easy job not really special in contrast to all previous much more complex repairs but also successfully done! Keeping the air clean is a must when soldering fumes are produced. I use a special Fan with an active carbon filter in front of it to reduce the pollution generated. I am a no smoker and want to stay it that way! When I look at that previously clean new carbon filter after a few months and after a few soldering tasks it shows a large white/grey area where the fumes entered the carbon. So happy that this didn't enter my precious lungs! It probably would be even better if the fumes where extracted from my room by some airpump system to the outside. But those are more expensive and take up more space for the compressor air hose attached to the soldering station. Why I often take my soldering tasks when I can to my balcony on a good dry summer's day and do the work in the outside open air.
Anwar Shiekh
March 24, 2021 at 1:29 am
Even the simple repairs can be immensely satisfying; the best are like this and the repaired unit might now last even longer than a new unit.
John Peplau
March 24, 2021 at 8:07 am
A little diamond in the rough. It’s a good feeling to find things like that and successfully repair it and get years of service and maybe give it to someone !
Parasuraman S
March 25, 2021 at 6:32 pm
many thanks
Yogesh Panchal
March 24, 2021 at 3:35 pm
Sir,
Revived! one more equipment.....
Parasuraman S
March 25, 2021 at 6:33 pm
Many thanks
William Shaw
March 24, 2021 at 10:24 pm
Parasuraman, I know it would be very impractical, but it would be interesting to just resolder one joint at a time to see which one was the real culprit. Care to give it a try sometime? Keep up the reports. Close-up pics are a help.
I would like to know what IPL is also.
Parasuraman S
March 25, 2021 at 6:35 pm
OK. Shall try! IPL is mistyped. It should be IPA. Thanks!