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In Reply to: RE: Hickok 539A tube tester -- Fix or ditch? posted by unclestu on August 14, 2015 at 14:41:41
That would be simple and perhaps explains why it worked fine 7 or 8 years ago and not today. However, the meter does work for gas, but it's erratic. For the conductance test, it won't budge. For the gas test, it was pegging the meter. Then later, it worked fine and as expected for gas.
I then checked the same tube on my 539C to be sure it was good and went back to the 539A. Then, the gas test did nothing but peg the meter.
Is there an easy way to check a cap? I'm not quite dangerous with a soldering iron and do have a basic ohm meter.
-Rod
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Considering the age I would change it out anyway. It's cheap enough.
Most testers are simply switchers and while I can not say I have worked on the 539, but that cap change on others like TV-7's works well for minimal cost and effort.
Thanks. That sounds like a simple fix that I could do and I do have the manual which is like 16 pages typed on an IBM typewriter, but it does have a schematic which I may have to post so someone can tell me the value of the cap.
The line voltage meter is a bit odd too, pegs, rather reading 120 like my other 539. Would that be the same type issue?
-Rod
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