Lafayette LR500T Stereo Receiver/Amplifier Repair - Distortion & Rumble in One Channel

Link to LR500T Schematic: https://www.mediafire.com/view/d7g10a...
Troubleshooting distortion & rumble in a vintage Lafayette stereo from the 1960s reveals several failed capacitors. This early solid state receiver and audio amplifier used 32 discrete transistors, mostly germanium not silicon, as well as a few early integrated circuits. Another adventure in vintage radio and electronics. Link to LR500T manual:
https://www.mediafire.com/file/z2w9uu...

Chapters:

00:00 Checkout
04:12 It works
07:12 Rumble in right channel
08:29 Cleaning controls
11:45 Distortion in right channel
12:34 Localizing to preamp board
14:50 Preamp voltage checks
21:02 Preamp capacitor checks
31:20 Preamp signal tracing
39:23 Replacing capacitors
41:48 Bass/treble channel imbalance
42:08 Localizing to FM board
46:11 Replacing FM output cap
51:25 One last bad capacitor
52:47 Final tests