Wells 19V1001 (Space Invaders) monitor - raster, but no picture!?!

Vectorman

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Wells 19V1001 (Space Invaders) monitor - raster, but no picture!?!

Guys,

I'm working on a Space Invaders. This is an NOS monitor chassis. It worked perfectly, then just as I was about to consider the game done and working, the picture disappeared.

If you turn up the brightness, the screen shows raster, nice bright and clear. But no picture. No adjustment or wiggling of connectors/wires ever reveals the picture. Plug in the harness to another monitor, and picture is there.

Where do I look?

Thanks for your help,
John
 
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