Did the DC measurements and nothing that odd.. I think it is the left channel of the PC6. I swapped the 12ax7 tubes and problem stays on same side.
Any ideas? I do not have a scope.
I cannot find any loose connections. Jiggles Loudness and all other switches. Could be a cap or resistor but not sure how to efficiently check this without lifting all of them. Should I just do the black caps and see? I hate replacing stuff when it is not defective.
I sort of sounds like faint water running under the audio. Any help appreciated thx.
Also when I put my hand near the 12AX7 near back of the chassis on the pc-6 phono board it hums.
Last edited by bubbasweet on Tue Jul 06, 2021 12:26 pm; edited 1 time in total (Reason for editing : additinal info)