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Precise 111m tube tester restoration
#13

I made some tests and so far haven't found any open resistors. Checked plate and screen voltages, compared between this one and a known good 111 and found the voltages almost identical, so it looks like things are starting to get interesting.

Added:
I just discovered that I can test rectifier tubes, which are Em tested, on this tester. I tried several different types. But, I still cannot Em test any amplifier tube. I tried several different types also, different socket and pin arrangements. None will test Em, but all will test Gm. This is starting to sound like a wiring error. Looks like I am going to have to go through the build steps and hope to find something.

If I could find the place called "Somewhere", I could find "Anything" Icon_confused

Tim

Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44


Messages In This Thread
Precise 111m tube tester restoration - by TV MAN - 05-27-2016, 10:00 AM
RE: Precise 111m tube tester restoration - by TV MAN - 07-09-2016, 12:47 PM



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