Quote:
Originally Posted by Jon F
I have been watching a few tube testers on ebay in the $50 range, I will likely bid on one this week or so.
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Be aware that the older the tester, the more restoration it's likely to need, just like any other device of the same vintage. Something like a Sencore Mighty Mite will cover the tubes commonly found in vintage TVs, and it's new enough that you can probably just plug it in and use it.
Some tube functions (notably, oscillation) can't be tested on any tester. In those cases the best test is substitution with a known good tube. In a few such cases, I've had to try as many as half a dozen "tests good" tubes before I found one that oscillated properly in a particular TV.
Regarding the volume, have you already tried cleaning the volume control? See:
http://www.antiqueradio.org/FirstStepsInRestoration.htm .
Regards,
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html