Continued: Static on amp, not volume related
Anyway, to answer the questions:
It is a solid state amplifier. Most components are soldered directly to the board or have flying leads. Tweetldee: The components in the power supply are definately thermistors, at least, according to the circuit diagram I have (could be -ve slope though as you say) I disconnected the preamp stage inside and the noise persisted. i then tapped components along the circuit path to see if any affected the noise (very scientific I know but I have no equipment beyond a soldering iron!). A couple of electrolytics seemed to make the noise worse/better when tapped them so I figure I'll replace these first. They are feed through capacitors on the small driving (before the power) transistors. The problem is farnel/RS don't stock these value of cap. Can I replace these with 2 or more caps in series/parallel to make up the value i want? Cheers Dean |
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