Quote:
Originally Posted by Yamamaya42
https://imgur.com/y84aCsd
OK..
I can't get a stable reading of any resistance between pin 1-2 , it's jumping all over the place, prob from going through all the coils, nor can i get a stable reading of resistance to the point "red wire" but there is 68v on both plates, ( sams says 50v)
between pins 5-6 was 438 ohms, ( additive of the 2 150 ohm resistors ), voltage at those pins changed dramatically with picture (contrast ) control.
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From either pin 1 or 2 of the rf amp to the red B+wire you should read around 3,500 ohms if R1, 2, 4, 11 were close to as marked. R1, R2 are paralleled by the tuner switch and those are in series with R4, R11. It's possible your meter is charging some cap, but I'm not seeing it at first glance. Or maybe the meters voltage is setting up an oscillation, who knows. All those tuning coils should read relatively low DC resistance compared to the higher total resistance. Anyhow it appears you now have a decent B+ getting to those plates, so I'm getting a little lost with the ups and downs.