Bulgy Capacitors Found In Enhance Model Computer SMPS
This Computer SMPS was once again from the hospital where I work. The complaint was no output. Opened and cleaned the SMPS thoroughly using blower and various brushes. Also cleaned and lubricated the SMPS Fan. Found two 1000mfd/6.3V Caps bulgy in the secondary. Replaced it. Found a lot of dry solders.
Retouched all the solder joints and cleaned the board with IPA and metal brush.
Checked ESR of all remaining caps and found these to be within the limits. Used Ring Tester, which helped me determine the health of primary and secondary sections.
As all pre-tests were found to be ok, I shorted the green and black wire in the connector and applied power. The FAN rotated smoothly. Checked all the voltages and found these also to be in perfect condition!
Mission accomplished and satisfaction got added to its collection!
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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