Trying to figure out why the +12 wire is at 18V on an apple II clone power supply.

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Joined: Sep 11 2009
Posts: 26

Anybody here ever had a problem where the +12 lead is reading higher then it should? I replaced one of the swollen capacitors to see if that helped but it didn't. All of the other output power leads are in spec(-12v,5v,-5v). Anybody have any ideas?
Thanks,

Matt

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Offline
Joined: Sep 11 2009
Posts: 26
Pics of the power supply.

The two pics that I posted of the power supply are before I replaced the swollen capacitor. The bad capacitor is most noticeable in the second picture.

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Joined: Sep 11 2009
Posts: 26
Re: Pics of the power supply.

I replaced all capacitors but I still had a problem with excessive voltage. I replaced the board with a modern version and all is good.