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Thank you guys for all the info. I will try and get some measurements. I'm starting to think what Yamamaya42 said is happening. I've blown the fuse M1 twice. The TV doesn't produce a raster at all. This TV has a phono input, and a position to switch from TV to Phono. What's interesting is if I flip between audio and TV quickly or if I turn the set off I'll get a solid line similar to a tv with a collapsed vertical for a split second.
To answer the other questions, I considered the Door Knob cap but my Heathkit C3 doesn't generate voltage high enough to check for leakage.
I have a Tektronix 531 scope, I literally just got it working, I just don't know how to use it well enough. Can I blow it up using it on certain voltages, like you could with a meter? Also it came with a 10x probe will that be good enough.
The TV is a RCA 7T11B with a KCS 47-GF2 chassis.
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