[R-390] r-390 neon reference tube question

daveaust at pol.net daveaust at pol.net
Sat Jan 6 13:36:52 EST 2007


I just replaced the 47-ohm resistors(they were old,oxidized and reading
over 100+ ohms) under the 6082's and replaced the c608 coupling cap in my
r-390 because I was only reading 130 volts with huge hum. I now have 181
volts with no audible ripple that I can tell in my quick preliminary
testing.
The 5651 neon voltage reference tubes now glow pretty well but I am
wondering how much of a glow they should emit. I checked all resistors
around them and they looked to be close to spec. I assume since the B+ is
on target and not really humming, thing are probably OK but just
wondering. Thanks for any input on the power supply subject. 73, dave
austerman




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