02-11-2018, 04:10 PM
Hi Bill
Well seems like you have a few possibilities. 15k resistor is open/ bad connection or something that it is feeding the 190v is shorted. One way to troubleshoot this short issue would be disconnect parts that go from the 190v circuit to chassis ground like C-102A while using an ohm meter across the 190v line. Set unplugged of course. What you are looking for is a resistance of abt 5000 to 100000 ohms or so. What you have now is something very low probably in the 10's or 100's of ohms. Ecaps will look like a short at first (for a few seconds) as as they are being charged by the voltage from the ohm meter. But after words should show a high resistance if good. Connect the black lead to the chassis from the meter. The other way around it may try to charge the cap backwards showing it to be shorted when it isn't
Happy hunting!
Well seems like you have a few possibilities. 15k resistor is open/ bad connection or something that it is feeding the 190v is shorted. One way to troubleshoot this short issue would be disconnect parts that go from the 190v circuit to chassis ground like C-102A while using an ohm meter across the 190v line. Set unplugged of course. What you are looking for is a resistance of abt 5000 to 100000 ohms or so. What you have now is something very low probably in the 10's or 100's of ohms. Ecaps will look like a short at first (for a few seconds) as as they are being charged by the voltage from the ohm meter. But after words should show a high resistance if good. Connect the black lead to the chassis from the meter. The other way around it may try to charge the cap backwards showing it to be shorted when it isn't
Happy hunting!
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 it!
Terry
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