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Here is a repost of a question that I would like to get input on. I
have the exact same problem with a 430 I picked up. Is this problem
usually related to output transistors or could it be a capacitor? How
would you proceed with diagnosing it. I have access to test equipment
but have never worked on a receiver before.

"I was just given a Harmon Kardon receiver that I
need some information on. It's model 430 Twin Powered, and that's
about
all I know about it. The right channel is screwed up however, and I'd
like to know if it's possible to get it fixed and if it would be worth
it; I asked about it at a local high-end stereo store and they said
that
it may be worth fixing.
They suspected that the problem is likely a blown transistor in the
output stage or a loose connection somewhere. The channel still emits
sound, but it's highly distorted.

If anyone can give some advice on the situation it would be much
appreciated. "

Thanks.

Steve B