Computer P.S. capacitors

Nov 05, 2007 3 Replies

My HP computer started to smell, so I shut it down. When I opened the power supply I found an inrush limiter that was blackened and fell apart at first touch. The part is available, so now I wonder, should I replace the two* capacitors at the output of the bridge? What kind of specifications should I look for? Thanks, Mike



  • two capacitors, I think one is part of a doubler.

P.S. any link to a schematic that shows how computer power supplies switch the input from 115v to 230v would be appreciated. Looks like maybe a voltage doubler and then switch open for 230v input?


"mike" hath wroth:

If they're not damaged, they're probably ok.

Found with Google in about 2 seconds.

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Also see:

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Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

I would check the diodes also. Keep in mind that if a diode is shorted, it probably blew the capacitprs also. Posssibly, the diodes are arranged as a bridge at 220V, and a doubler at 120 V.

Tam

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