Museum of the Game® & International Arcade Museum® Forums

I posted another thread in the arcade machine repair; but since this monitor is having such weird issues I thought I'd move it here for help.

So this is a K4600 chassis. The tube it came with was cracked, so I tube swapped it, kept the original yoke on. I never knew if this monitor worked to begin with because I wasn't the previous owner.

However it has a weird issue where all of the R G B guns are just on. I can turn the brightness and all of that down and it does nothing. It's not the screen adjustment or any other. I've messed with it for days.

So, I tested it with a pattern generator, no luck. Even with no video signal it still does it. Monitor hasn't been recapped yet.


Whenever you put a video signal it, it shows up very faintly, you can also see it as shadow like underneath the colors. It's almost inverted like, where instead of filling in colors it colors the whole outside. The video syncs properly and scales, no issue there.


I'd be interested in possibly sending the board to someone to look at or repair.. has anyone seen this issue before?
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