Can't get streaks out of monitor

dudah

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Donor 2013, 2023
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I've grown impossibly frustrated with this issue.

Have an old Williams Multigame I'm trying to get working. Can't get the smeared text (pictured) to go away and get a clean picture. Board is tested in another rig. Tried 2 univeral chassis' I had laying around on 2 different tubes and the problem persists!

The setup - power goes into original Joust power brick, isolated voltage to the monitor,
128VAC at the wall, 136VAC at the switching power supply (coming off the Williams transformer), solid 5.02V out of the power supply. Everything is grounded properly. No other electrical devices near causing interference.

Despite them being universal chassis' they seem to work well. What am I missing here?
 

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Welp plugged in an LCD to test and it seems like it's not the monitor.

Not sure where to even go from here. Crappy power supply? Solid 5.02V out. Tested the game board in my JAMMA rig and it worked fine.
 

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First pic looks like the contrast is out of adjustment.
Second pic looks like a degaussing issue.
Third pic looks like the colors and contrast are out of adjustment along with needing to degaussed.

LCD pic looks like the contrast is out of adjustment.
 
Try the monitor on the jamma rig and see if the problem follows. If not then the problem is either the multi board (which you state works fine on the jamma rig) or the wiring.
 
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