Check TR604 on the power board. And check for any solder bridges on the phono board.
Fuse resistor r601 on the tone amp board is reading 500k ohms! I wonder if that could explain some of the loud popping when hitting the audio muting and liw filter since those controls are on that board
ok. good news to report! New resistors in place of old fuse resistors helped! I am still having problems with the phono mic amp though. After replacing the bum fuse resistor on the tone amp board it sounds great now! But the catch is I have to disconnect the mic/phono amp board. So I'm pretty sure now my problem is in that board somwhere. I have taken all the components I changed off that board to discover I have lifted traces all over the place. I think the third disassembly did them in as they were not lifted before. I suspect my iron temperature is too high. I have a new to me Hakko and I am still getting used to how hot this thing gets! I ordered a repalcement phono amp board off ebay so I can start fresh
Ok. so that phono board shows up tomorrow. the fm sounds good. but the stereo light won't come on. and I can never get the "tune" gauge to center. If I tweak to2 will that fix the stereo light? My cat ran off with the mic amp knob so I had to buy a replacement. this has been one of the most tedious error prone rebuilds I have done,! I have learned a lot though! (Thanks to you guys!!) So thank you again from the bottom of my heart!
My cat ran off with the mic amp knob