jetboatguy
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#1
20th May 2013
Old 20th May 2013
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Fried Op-amps..??

having issues trouble shooting these old amps.. I've tested all power transistors, everything seems ok in that department.

how do I know if I have fried opamps in my vintage Crown amps ?

I have a D75 and a D150a.. both have the ua739 ic opamps.. which I could blindly order some spares online.. but rather not if this isn't the problem.

the D75 only has one channel working
and
the D150a.. both channels not working
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