sansuibutch
Super Member
OK - it looks like the bias transistor isn't turning on, so it is either faulty or installed incorrectly, OR R37 (47 ohm), R39 (1K), or R41 (1K), are open or the wrong value. (also possible R29 5.6K, R31 1K). What do you have for a bias transistor? (schematic says 2SC1904) - test it, and the resistors - change anything that is out of spec (lift the resistors to be sure) - then try measuring that voltage again - you should be able to vary it a lot more.
Allright I just checked all the resistors mentioned and they are well within spec. I can't tell what bias transistors I have because the markings are on the bottom, and I know that because yesterday I pulled them and did the 6 way diode test on them. I posted the results and Overundr1 confirmed they were good. I'm at a loss. This chnnel sounded decent even with the bias problem before I shorted the left channel output. Is there any other things I should be looking at?