I bought a used Elekit TU-8500DX. It sounds fine except for a 2-3 dB imbalance in the levels between the left and right channels. I replaced the tubes but that had no effect. I assume the problem is an asymmetry in the potentiometer or a slight mismatch in the resistor values in each channel. I'm guessing the easiest fix would be to replace the R38 100K Ohm resistor with a slightly higher value? Can anybody tell me if that is the right course of action and how much I need to change it to get a 2.5dB reduction in volume in the right channel?
Hmm, those would have been smart things to have tried but I didn't since I am only using one input and I don't use the volume control, I just leave it all the way on high. If I hook it back up I'll test that.