retrogear
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I agree with Brian on doing the test he requested in post #38. I understand exactly what he means about a value stored in the eeprom for the green level
that could be incorrect. My only other observation is that there is a five wire cable that runs from the CRT board to the main board with possibly a connector
on each end. Did you ever unplug that cable and replug it in? The center pin is the G signal. I have seen where the wire in the plug will actually push out
or a pin gets folded over. If you never unplugged that cable then it's probably not the issue but otherwise a visual inspection might be good. Again, if you
never unplugged the cable then it probably is not the problem and just do his test.
Larry G
that could be incorrect. My only other observation is that there is a five wire cable that runs from the CRT board to the main board with possibly a connector
on each end. Did you ever unplug that cable and replug it in? The center pin is the G signal. I have seen where the wire in the plug will actually push out
or a pin gets folded over. If you never unplugged that cable then it's probably not the issue but otherwise a visual inspection might be good. Again, if you
never unplugged the cable then it probably is not the problem and just do his test.
Larry G