A friend got an old pioneer receiver for $5 - sounds better than his
Marantz.

He had it cranked up and noticed one channel was out. Messed with
the wires and switches - eventually we narrowed it down to dirty
pots for the most part.

Anyway, he smacked it on the side. The tuner dial light went out.
Smacked it again. sound went south. Again. Sound went farther south.
Again. No sound.

"Bad solder," I opined. "Hit it on the other side."

The sound came back a bit and we laughed. I swear each time he hit
it on the other side, the system came back up exactly the opposite
of the way it went down in the first place, with the final smack
bringing the dial light back.

"Ok. Good solder. You just have to know how to work it," I quipped.


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Best Regards,
Mike