Quote:
Originally Posted by bandersen
...I'm also going to check the tubes on the sweep board again. It does take a while for the set to lock when turned on.
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Even if the osc. tube tests 'good', try dropping the heater voltage a notch or two. Or use the 'life' test if the tester has it. If emission drops abruptly the tube is borderline in oscillator service.
In instances like this, the set itself can be the best tube tester.
