Well I picked up this TW-1300 which looks a lot like the TK-140U, now that I see it and the guts.
Nothing good to report except I have the box and packing materials. Sure wish I had the schematic or something. This one, missing screws from the bottom and all the back panel fuses (main power 3A and the two speaker fuses) and the dim bulb isn't making things look good.
I guess this is an opportunity to learn as I slowly play with this unit to see what is worn out. Other than its limited value what other positives are there with this one?
Any schematics for this one or the TK-140U out there?