Bought a junker 9100 with a bad channel, fried TA-100. So I implemented the SicMan solution. (I think this is his deal, it was sent to me by another member)
It was simple to do and works perfectly, nice and cool and no difference that I can hear between channels. But the odd thing is that I installed the same setup on the side with a working original module and that side ran hotter'n hell. I measured the voltage between the two resistors (I assume this to be "bias" unless I'm misunderstanding) - on the side that works correctly it was 32mv. On the side that runs so hot it was was 160mv. I measured voltage at the zener, which was correct, tested the other diodes and replaced all 6 transistors and recapped the board, and still hot. I then reinstalled the TA-100 and it runs nice and cool.
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Any ideas? Not really a big deal - this thing is really a beater and I won't do anything with it but monkey around...
It was simple to do and works perfectly, nice and cool and no difference that I can hear between channels. But the odd thing is that I installed the same setup on the side with a working original module and that side ran hotter'n hell. I measured the voltage between the two resistors (I assume this to be "bias" unless I'm misunderstanding) - on the side that works correctly it was 32mv. On the side that runs so hot it was was 160mv. I measured voltage at the zener, which was correct, tested the other diodes and replaced all 6 transistors and recapped the board, and still hot. I then reinstalled the TA-100 and it runs nice and cool.
.
Any ideas? Not really a big deal - this thing is really a beater and I won't do anything with it but monkey around...
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