AC In My B-

[Kevin Kuehn]

Originally Posted by Jon1967us

One question about the HV deflection caps coming off the horizontal output. Schematics call for two 300uuF and I have two 470s instead. Could this potentially be creating a problem?

Stands to reason the 470pf could pass a lower frequency but I kind of doubt they picked a lower value specifically to eliminate 60 hz leakage into the picture. I would focus on trying to nail down which pin(2 or 3) the 60 hz is modulating the CRT, and whether or not it's there with no video signal present, maybe even disconnect the cap connecting the video to the cathode. The brightness control determines the cathodes DC bias, so you need to leave it connected. Have you tried swapping the CRT with the one in your other set? It's possible the CRT has some internal cathode or grid leakage.