Image Position Waaaaaaayyyy off. GO7 CBO

Zcar

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Donor 2025
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What would cause this?
The image is rock solid stable but not right, obviously.

I tried my LCD test monitor in the game and the picture was fine, perfectly centered.

Thanks!
 

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Incorrect sync, or a broken trace/connection somewhere in that section of the header pins. Show us your monitor molex connectors, and pics of the header pins on the bottom of the chassis.
 
It will be a couple days before I can check the bottom of the chassis but I can tell you it was just rebuilt. New flyback, caps, pots, width coil, etc.. The monitor was tested after the rebuilt chassis was installed in it using my JAMMA test rig using a 60 in 1 board. It was perfect, real nice pic.

The wires from the original, untouched, game harness for the monitor are all in one 6-hole flat Molex plug. The game uses positive composite sync. so, there is no second 3-hole plug for negative sync at all. The way it is set up it would seem impossible to hook the sync incorrect.
 

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Incorrect sync, or a broken trace/connection somewhere in that section of the header pins. Show us your monitor molex connectors, and pics of the header pins on the bottom of the chassis.

You were 100% right. Turns out the cab wiring had been screwed with after a closer look. It wanted composite negative, not the composite positive. It was working on my lcd test monitor the way is was wired because the lcd only has one 6-pin input and the sync is sorted automatically. Thanx for the help TG!
 
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