Eygo 1826HR 25"

modessitt

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Went and looked at a converted Simpsons cab that had the CPS2 game Dungeons & Dragons: Shadow Over Mystara inside.

The CPS2 had suicided, but I could turn the brightness up and get raster.

So - I Phoenixed the D&D, then recapped the chassis.

Put it all back together. I have gameplay sounds, but I'm getting no image on the screen. However, I can still turn up the brightness and get raster.

So - either the board isn't putting out video, or the monitor has some other issue.

I let the game/monitor run for a bit while I was doing some research. When I went back to check some connections, a spark popped back near the yoke connector and smoke started coming up. I shut it off, pulled the chassis, and it appears the smoke was from a solder pad of a diode overheating next to the yoke connector. BUT - the diode is still good. It goes to a cap on one side, then the flyback. Cap didn't pop. Not sure what's going on with this.

Anyway, the yoke is showing the following readings:

H: 3.6-ohms
V: 6.8-ohms

So - I was thinking of digging up a 25K7000 chassis and throwing it on there instead, or replacing it with an entire working 25" standard-res I have in storage.

Just thought I'd mention it here in case anyone knows any common issues with this model...
 
I've seen the color processor IC go bad on newer monitors and produce exactly what your describing. Raster with no image. Its that LM1203 I think.
 
I figured out I didn't have the two boards pressed together good enough. Once I did that I got a picture - on a different monitor since this one smoked...
 
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