jethis
New Member
Hello all, I have a newbie question that I hope someone in the Yamaha forum might be kind enough to help me with. I just purchased a C-65 preamp in very good cosmetic condition from Salvation Army for $20.00. Got it home and found that the volume was very scratchy and the left stereo channel did not work at all, although the right channel works and sounds excellent. I spent hours cleaning the board and resoldering the RCA inputs, but this did not restore the sound in the left channel. Upon taking a closer look at the board, I noticed that some glue around the heatsinks had spilled over onto the board and turned into a nasty crust, completely enveloping two resistors. While I could not locate a schematic for the C-65, I found one for the C-85, which appears to have the identical heatsink configuration. In the C-85 schematic, the two resistors are labeled "R271" and "R272." The parts pages in the back of the service manual did not list these two parts, and I am unable to identify them by color since they were so badly damaged, so I am hoping someone might be able to tell me what replacement parts I need to get. I have attached a photo showing where the two resistors would go on the board.