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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Testing 5AR4 and 6L6GC tubes posted by FrankC on December 5, 2014 at 20:29:25:
Frank
It's just like Chip said,your tester doesn't put enough DC voltage across the tubes for real world conditions many times..Most of the time a tube tester can tell you if a tube will conduct or has a dead short but the problem is there are many times a short won't show up in a tube until it has a high DC voltage on it. This is very common on output tubes like the EL34 and the 6L6GC and the 6V6,etc. This is commonly due to arc over.
This is the reason I trust my Heathkit TT-1 much more than by Hickok 539B.
Under most situations,both testers tell you what you want to know however,the 100vdc higher B+ in the TT-1 is a blessing and it's breakdown that I'm concerned with at working voltages.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Edits: 12/06/14
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- RE: Testing 5AR4 and 6L6GC tubes - Michael Samra 21:15:29 12/06/14 (0)
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