[Chris h]

I have worked my way down to the volume control circuit. It does not match the schematic. What's in there looks to be very old but may not be original. It is not the work of the hacker, as it is too professional for him. I am just wondering if there are any known published mods to this circuit. It works, and sounds good, with the exception of the tone control circuit, which has very little effect. When I rebuilt the tone circuit I rebuilt to the schematic. The volume control does have the tone compensating tap, which is connected per the schematic.  (The tone control circuit is one of the things that had been hacked badly by the last guy, so I don't know what was there before he got into it!)

I am debating going back to the schematic "stock", or simply replacing the OT resistors and keeping the mods, as they are working. (Other than the tone control.) In looking at the under chassis photos that I have seen, the area in and around the volume control don't look like mine. There are some molded caps (mica?) attached to the chassis.  None of which appear on the schematic or parts list.