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Burst Fixed Capacitor Found In Primary Of Small Size Computer SMPS

By on February 3, 2021
Burst Fixed Capacitor Found In Primary Of Small Size Computer SMPS








how to fix atx power supply

This small SMPS was serviced by me once in October, 2019. Kindly see the article here: Servicing Small Size Power Supply- Model LC-8180FSX | Electronics Repair And Technology News (

It was brought to me in dead condition. When I opened and checked up, I saw the 105/250V Fixed Capacitor burst in the primary section. It was found short too! So, replaced it with a 105/450V Cap.

fixing power supply atx

Then checked for any more damages and did not find any. Applied power, found FAN working well and checked the voltages, which were found to be normal.

Closed the case with satisfaction getting added to its bag!

how to repair atx power supply

Note: I am giving only snaps of two voltages just for reference. All other voltages such as 3.3 and -12 were also found to be ok. As I had already covered the full pictures of the internal in my previous article, I am skipping these too here!

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:




  1. Albert van Bemmelen

    February 3, 2021 at 1:40 pm

    A bad cap that was replaced after a quick and fast diagnose! It is always a good vibe when another bad power supply gets fixed!

    • Parasuraman S

      February 3, 2021 at 5:52 pm

      Many thanks!

  2. Yogesh Panchal

    February 3, 2021 at 6:38 pm

    Good quick Fix! Sir.

    • Parasuraman S

      February 5, 2021 at 10:29 pm

      Many thanks!

  3. Imoudu Onwumah

    February 4, 2021 at 5:46 am

    What a fast one!!.This time not many caps retired.Bye the way would you like to share with us the method you use to desolder and remove ic with many pins from board as you did to that ic of 12pins of induction cooker of 28/1/21.

    • Parasuraman S

      February 4, 2021 at 7:27 pm

      I applied liquid solder flux on both sides of the IC. Then I used my high temperature soldering iron, heated both sides one after the other in quick successions and applied slight pressure with a tweezer in place. The IC came off quickly.

      Many thanks for your comments and enquiry!


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