Sorry all, I know this thread is old, but I was reading it for info, lo and be hold, I fixed my Harmon Kardon TS7 today, two Op amps with really bad solder joints and removed all the heated running glue that was shorting connections.
also changed a Cap, I need to change a few resistors as they have changed colour from heat, but do not have any of the correct size, will change later.....
Working great now with no popping or crackling.
Paul

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