Parts is Parts
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Extremely Sensitive G07 Horizontal Frequency Adjustment
I have a G07 that i've recapped, new regulator, new HOT, new adjustment pots (minus B+), new fuses, and new cap kit. I plugged it into my test rig and while the chassis works fine, I cannot get the Horizontal Frequency adjustment fine tuned. I can get it close, but the full picture (Pac Man) will still slowly roll upward/downward depending on which way I adjust the pot. The fine tune is so finite I cannot get the picture to stabilize. I can come very close, but the moment I try to remove my adjustment tool it goes out of adjustment and starts rolling again. When I can get the picture somewhat stabilized, the color, and overall adjustment looks really good.
This chassis is going in a Pac Man, so it has negative sync. Sinc wires are jumped, and everything is wired exactly where it should be. I've checked the infamous "wrong value sync resistors" and they are all in the proper range. I've also swapped out the 5K Horizontal pot for another one, with the same result. B+ is at 122 volts - i'll work on getting it to 120, but I don't think an additional 2 volts would cause this issue.
Any sage like wisdom on this matter would be greatly appreciated!
I have a G07 that i've recapped, new regulator, new HOT, new adjustment pots (minus B+), new fuses, and new cap kit. I plugged it into my test rig and while the chassis works fine, I cannot get the Horizontal Frequency adjustment fine tuned. I can get it close, but the full picture (Pac Man) will still slowly roll upward/downward depending on which way I adjust the pot. The fine tune is so finite I cannot get the picture to stabilize. I can come very close, but the moment I try to remove my adjustment tool it goes out of adjustment and starts rolling again. When I can get the picture somewhat stabilized, the color, and overall adjustment looks really good.
This chassis is going in a Pac Man, so it has negative sync. Sinc wires are jumped, and everything is wired exactly where it should be. I've checked the infamous "wrong value sync resistors" and they are all in the proper range. I've also swapped out the 5K Horizontal pot for another one, with the same result. B+ is at 122 volts - i'll work on getting it to 120, but I don't think an additional 2 volts would cause this issue.
Any sage like wisdom on this matter would be greatly appreciated!

