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Old 03-17-2016, 10:03 PM
pendulum pendulum is offline
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Join Date: Sep 2014
Location: West Suburbs, Chicago IL
Posts: 122
I removed the horizontal subchassis and ended up replacing a bunch of off resistors and it seems to have made a big difference! Vertical, horizontal hold and everything else is working great. As you can see in the picture however, there is some fold over at the bottom of the screen. I could get rid of it by adjusting the controls, but it reduced the size of the image too much for the mask. However, the one capacitor that I did not replace, 1ohm at 60 cycles 3v non-polarized, goes right across the vertical centering control. I did some math and using the capacitance reactance formula I figured this is about 2650uf. There also are a few resistors in the vertical linearity and height controls, so I will check those next. I also felt for how well the crt tested, I didn't have that great of brightness. However, there are also a resistor chain in the high voltage area which also may be off. Interestingly this revision of the chassis does not have a width control, so I will have to figure out what replaced it and check that area as well, as it stands the width is pretty close to correct for the crt size, but not perfect

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