Need Sync Help with a G07 in Qbert

Mark Hooks

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I can't seem to get the horizontal sync to lock in on the G07 I put in Qbert. I've tried adjusting it to no avail. Which wires do I connect and to which set of pins?
 
What's it hooked up like now? If I recall correctly, you need to jumper the tow negative syncs. Can't get to mine right now to look. If it had a WG in there originally, it might not have a wire for the -vertical sync....
 
What's it hooked up like now? If I recall correctly, you need to jumper the tow negative syncs. Can't get to mine right now to look. If it had a WG in there originally, it might not have a wire for the -vertical sync....

It has the single factory flat connector with red, green, blue, then white orange and black wires. I tried just plugging it on to the G07 connector.
 

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Pull that last wire all by itself and move it to the connector behind the big one. Use the last pin on the left and see if that fixes it.
 
Pull that last wire all by itself and move it to the connector behind the big one. Use the last pin on the left and see if that fixes it.

That wouldn't work with a G07. If it was composite negative, it would have to be connected to both the middle and left pin of that three-pin connector...
 
My Qbert is wired up just like your picture.....I agree, you're having a sync issue......somewhere. I'd check for breaks in the wiring, bad connector pins, or bad/cracked header pins. I'm betting on header pins.....either the monitors 6-pin header.....or the header on the filter board (and with that, I'm betting filter board).

Edward
 
I don't know if Qbert puts out negative composite sync or not. If moving the one lone wire to the back connector doesn't fix it,then make a jumper and connect it to the 2 left most pins on the connector behind the one it is on now as modessitt suggested. It helps to have a new connector to stick the pins in. Maybe you can rob one off an old wiring harness.
 
QBert uses individual positive sync as per page 17 of the scat. The proper monitor connection for a G07 will be...
R
G
B
Gnd
V Sync
H Sync
 
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