Re: Need Help with Amp Supply LK500ZC
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Steve, Dave, Lou, and allOne of my problems is that I'm doubtful that I have a complete schematic for this amplifier.?? Best I've been able to find is from a 1988 users manual I found? . The previous owner who refurbished the amp replaced what I believe is the relay you refer to with what I was told are high-end vacuum relays, which if so, I wouldn't expect to be the problem and if it is, I wouldn't think burnishing contacts would be feasible. I'm also not understanding on how a bad relay would relate to the overheating when the amp was idling??
I have on my to-do list the task of reconciling the schematic with the existing circuitry, which is not something I feel I'm very good at.? I was told the QSK circuitry was bypassed (removed?) ("They're nothing but trouble")? and I've never seen the ALO light come on so not sure it hasn't also been disabled.? Other questions I have about the amp are whether it is good on the WARC bands and how to tell if it has a soft-start circuit which I read somewhere were factory installed on later models but I don't recognize in the schematic I have.
And to clarify my earlier post, the tubes were refitted not replaced.? Thanks Adrian.
Cheers for now.
/John
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