• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Help fixing a 60s Vidaire Catalina stereo amp

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#21
You cannot really tell from the spot on the top of the tube. That could be normal.
It would be nice if you had access to a tube tester.


Steve is probably right in saying filter caps may be old and bad causing some motorboating. The catch is finding good new replacements.
 
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