Donkey Kong monitor adjustment issue

chrispf

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Recenlty had my donkey kong monitor recapped. Looks great but I'm now not able to get it to stretch to the top and bottom. Or if stretch is the wrong word...then it needs to be adjusted to be centered. The actual image (level 1 for example) is just to low on the bottom of the screen and there is about 3 or more inches of unused screen remaining at the top. Thanks for any suggestions.
 
Adjusting the v-pos pot on the game board doesn't do anything at all (it's usually a small white knob)? If it doesn't, then you may need to solder on some new ones. Remember there are seperate adjustments on the monitor and gameboard.
 
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There's two pots that set at the top of the motherboard. You need to adjust one of those (sorry, I can't remember which....I'm pretty sure they're labeled).

Edward
 
Be aware that you will never have the entire screen utilized. Your left and right can be stretched to fit using the pots in the PCB but for top and bottom you will usually end up with 1.5" to 2" of dead space.

Also - depending upon your chassis, it might have a jumper located to the left of the high voltage cage. This also helps with centering the picture.
 
That took care of it...the white knobs on the pcb with about 1.5" of dead space on the bottom.

Thanks all
 
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