Troubleshooting great old Kenwood home stereo power amplifier.

Hello, I have a home stereo power amp Kenwood Basic M1D.  I am having trouble with it working fine and then cutting out.  I have checked every variable i can think of, including power source, testing different speakers and making sure the speaker wire is the right gauge and equal length, testing the speaker wire terminal ports (A vs B), changing the fuse, searching for miscolored resistors, and checking for overheating and good ventilation.  It just really confuses me because it will work fine all day and then the next day it suddenly it will click off with a pop in the speakers and the "protection light" starts blinking.   I have a little background with electronics but this is beyond me.  Can anyone please Help??

by lipsk1
June 01, 2020

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