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I had a K4600 that was working but needed a cap kit. Did that and reflowed all of the connectors and now I get no video. If I turn the black level all the way down I get a white screen with raster lines. If I turn the Screen knob on the neck board I get a red hazy screen but no gameplay.

I have replaced the black level pot twice, rechecked caps, fixed questionable traces, and I am at a loss as to what to try next. The only thing I am doing just to be sure is trying to buy a replacement video interface board, as it had a lot of lifted pads and traces (though I bodged them all and checked continuity).

Anyone have any ideas? I cannot think of anything else to try at this point.
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