In Reply to: Funny you mention this... posted by Audiodyssey on August 27, 2015 at 00:55:15:
I think it might be the low filament voltage, since it seems to be a problem on both the 7 and the 10 models. Or as you say the minimum might be set too high.
I'll bet if you test those duds in a working circuit you will find many of them are quite functional.
This little discovery has sure changed the way I will use my tube tester in the future.
Edits: 08/27/15
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Follow Ups
- RE: Funny you mention this... - vinnie2 02:29:46 08/27/15 (0)