Quote:
Originally Posted by bandersen
Also be aware the PR57 output voltage meter is not very accurate. I put mine about 5 volts about 117 to get 117 out with a set drawing a couple amps.
You should be able to go all the way up on the brightness. I wonder if your HV rectifier tube is weak?
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I had put a NOS 1B3 in it but I can try another. NOS doesn’t mean much when it comes to 70 year old vacuum tubes