video issues

mike11

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need help please....have a poker plus poker mach n board is working but the vid is kinda scrambled..... all voltages are good.... checked n cleaned edge connector.....whats next guy??? you guys always get me fixed up quick

Thanks
 

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the monitor chassis (board) - not the actual game pcb (board). Usually there's a row of small white knobs, things like hold, width, sync.... (in back of the machine usually, behind the picture tube)
 
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no adjustments just a VS and HS wire off the chassis connector that both go right to the game pcb
 
HS (Horizontal Sync) VS (Vertical Sync) - with it scrolling diagonally like that somethings not syncing right - did it just start doing this? Try flipping the wires (flipping syncs won't cause any harm). You could also try jumpering them together (composite sync)
 
i just bought these machines i have 2 identical machines both doing the same thing..... swapped boards n problem follows ... the condition varies slightly machine to machine...... Ill jump the wires n report right back
...
 
with them jumped its the same...... seems to start flickering as the unit warms up after a few seconds....
 
heres the monitor n chassis,,,,,,, top left is the vs n hs wires
 

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Looks like a sync/hold issue...I'll have to concede to one of the monitor gurus on here... if you can find out the monitor brand/model you might be able to find a manual which may shed more light on the subject - sorry
 
Just a shot in the dark, but I wonder if it's a multi-sync monitor and it not set to the same frequency as the game board. Google the game and see if you can find a PDF manual, it might have some info that'd help.
 
seems like a horiz hold prob cause it dosent jump vertically..... these machs worked a long time n just started doing this the owner told me .... i cant find an adjustment for horiz hold anywhere... i need a pdf for the game as well but theres nothing on the board and I cant get a good screen to see what it is LOL ....nightmare
 
see if you have a pot on the chassis labeled VR301 that would be your Horizontal hold pot.

that should fix your issue.

Peace
Buffett
 
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