after:
At the end I adjusted the offset of the differential amplifier input with R200 to 0mV at the speaker jack. On to the left channel!
Friday, June 15, 2012
Beomaster 8000 Rebuilding the Power Amps
Today I rebuilt the right output stage. I put in new electrolytic capacitors and replaced the no-signal current trimmer. It was a good idea since a look at the old one revealed that it was intermittent when turning it. Adjusting the voltage between TP200/201 to 18 mV according to spec yielded a nice cool heat sink, even after a 1hr run. Here are before and after pics:
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