quick question.. should be an easy one for you guys

Trioxin

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quick question.. should be an easy one for you guys

I just installed a new 60 in 1 jamma board into my cab.. I'm having trouble getting the screen to stop scrolling so I can get the picture centered. I have the sync loop wire installed.

are monitors sometimes just really touchy when you try to adjust them? Or is there something wrong with the sync pots on my monitor?
 
What kind of monitor? How do you have it connected? There are two sets of sync inputs on most monitors, positive and negative. Jamma boards are all negative sync. Also, some monitors don't like having the H and V syncs connected together - so just try feeding the composite sync into one.

The 60-in-1 boards are notoriously a bit touchy with some older monitors, they aren't exactly stellar examples of precision electronics - they're cheap bootleg junk. The video signals they output aren't spot on, so some monitors do have a hard time, a curl at the top of the picture, for instance, might not be able to be adjusted out. But you should be able to get a stable picture.

Sounds like you just have it hooked up wrong.

-Ian
 
thanks Ian, I'm getting clear picture. I'll check and see what kind of monitor it is. All I can say off hand is that its a 1985 data east machine.
 
Wells Gardner 19K4953

I tried hooking both syncs up to one, and they are connected to negative.

All I'm getting is an upside down split picture that slowly scrolls across the screen (if i'm lucky) otherwise it just scrolls as fast as it wants wherever it wants.
 
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