Quote:
Originally Posted by pendulum
I was able to do some work and replaced some resistors in the horizontal hold circuit and changed some caps. It improved horizontal hold, but only marginally. Basically the image has a very, very small window of hold, then turns left or right. Also, when I was able to get the image to hold, it was off-center. I am not quite sure what would cause an issue like this. One thing I thought might potentially be causing this problem is, when I measured the resistance of the horizontal hold pot, it seemed to jump around a bit in the middle instead of going from 0 to 50k. Perhaps this is why I have such a small window of hold? Any other thoughts? Thanks for the advice!
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What I'd most be focusing on regarding the horizontal symptoms is the sync separator and the horizontal AFC. If the vertical sync is as solid as it should be focus on the AFC...Otherwise go after the AFC. My gut says AFC; it will affect H centering too. If the AFC diodes are stock, try changing them. Check voltages on the H AFC tube too.