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My adcom GFA555-II won't power up,checked speakers they were fine.

My amp will not power up.

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These things are a *****, but. Check the electrolytics on the circuit brd. Adcoms are know for this problem. When they leak, they destroy transistors that the electrolite gets into. If the circuit board looks wet, them kiss it goodbye. Etches get eaten up and generally make the amp a brick. Adcom doesn't have replacement circuit boards Check all the fuses on the back panel too.. When something bad happens to these they also burn up a lot of ten ohm resistors on the heat sink boards. I may be able to provide a pdf on this unit.

Posted on Oct 14, 2008

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