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Technics SU-C04 Amp Issues
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<blockquote data-quote="gbyleveldt" data-source="post: 69948" data-attributes="member: 122"><p>To me it sounds like you have a DC offset problem. Not sure of the amp design, but if it doesn't employ DC blocking caps after the volume control, and the control goes flaky, you may well end up with some DC going through the amp. You should follow Ampdog's advice, a thorough cleaning of the PCB, pots and switches may very well sort out your issues. Once this is done, you can have a look at the Electrolytic caps (esp the PSU ones) to see if they hadn't dried up. In fact, I had an amp in the other day where flaky PSU caps caused the amp to go into protect because the DC operating point was all over the place.</p></blockquote><p></p>
[QUOTE="gbyleveldt, post: 69948, member: 122"] To me it sounds like you have a DC offset problem. Not sure of the amp design, but if it doesn't employ DC blocking caps after the volume control, and the control goes flaky, you may well end up with some DC going through the amp. You should follow Ampdog's advice, a thorough cleaning of the PCB, pots and switches may very well sort out your issues. Once this is done, you can have a look at the Electrolytic caps (esp the PSU ones) to see if they hadn't dried up. In fact, I had an amp in the other day where flaky PSU caps caused the amp to go into protect because the DC operating point was all over the place. [/QUOTE]
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Audio and Video Talk
General Discussion
Technics SU-C04 Amp Issues
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