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I had some time to do some probing, here is what I have found so far. I triple checked the yoke, convergence, and wire mounts on the pcb and could not for the life of me find any broken wires. Next I started checking the voltages on the 12jq6 vertical output tube (this sucker gets hot enough to cook food off of!). I have attached a portion of the schematic below, but here are what the voltages are supposed to be for the tube
1- do not measure
2- not given
3- 135v
4 and 5 - 40 ma
6- -60v
7- -5v
8- -5v
9- 10v
I checked 3 and it was spot on at -135v, but when I checked pins 6 through 9 they were all around 47v! Clearly something is wrong there. I attached a pdf of the schematic, so you can follow along there. I checked the 280v source and that was correct. I checked R111 and it wasn't open, neither was 116. i noticed on the waveform picture off of r116 they say the wave is 40v peak to peak, so maybe something around the tube is not pulling the voltages down to what they are supposed to be? I noticed the vertical linearity control was near the circuit, but rotating it didn't seem to make any difference. I don't know if it should influence the voltage or not. I know the service switch is in the circuit, but putting it in service mode did change the voltage like it seems it should. I will keep probing around for any obvious things like open resistors, but any advice would be appreciated. I know there are a few diodes near the vertical output, I don't know if they were bad would cause something like this or not. Thanks for the advice guys!
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