Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

model 48 464
#7

Ok so if you measure the dc voltage from the cathode of the 50A5 (+) and B- to the negative meter lead. Should see about 6vdc there if the resistor is 130 ohms. If it's 233K it's going to be a whole lot more like 30 or 40v. This will cause the tube not to conduct. Replace w/a 1 or 2 w replacement.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry


Messages In This Thread
model 48 464 - by retired2020 - 11-19-2023, 05:29 PM
RE: model 48 464 - by morzh - 11-19-2023, 06:06 PM
RE: model 48 464 - by Radioroslyn - 11-19-2023, 09:49 PM
RE: model 48 464 - by retired2020 - 11-20-2023, 03:25 PM
RE: model 48 464 - by Radioroslyn - 11-20-2023, 07:29 PM
RE: model 48 464 - by retired2020 - 11-20-2023, 08:20 PM
RE: model 48 464 - by Radioroslyn - 11-20-2023, 11:58 PM
RE: model 48 464 - by retired2020 - 11-26-2023, 04:55 PM



Users browsing this thread: 1 Guest(s)