Re: Different capacitors in the chassis and different values in the schematic !
It is likely that some of the resistors have become unstable after such a long time. In the amplifier, I expect some are used in RC filters. If you've got used to the sound before you changed the capacitors, and the resistors are unchanged, it is a possibility that the frequency filters made from resistors and capacitors have now changed value. The result would be as if a tone control were continually in operation. I think it would be worth measuring some of the likely components, as changing old parts for new can remove the mask that concealed other problems!
|