WG K7191 vertical size issue

UnknownMK

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Can someone explain why when I turn on the machine the verticle size is expanded beyond where it was set the last time I turned it on? I center the picture so the top and bottom of the screen just reach the corners and when I turn the game off then on again I have to recenter and shrink it again. This just started happening, any ideas out there?
 
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Looks like that did the trick, it's not PERFECT, but there is a noticeable improvement. Thanks!
 
Wasn't doing that on my setup. That's odd. Is there a different game that you can try to see of it's the board or a monitor issue?
 
It actually just started happening the last few days. I've cycled through all 4 games on the switcher and they're all the same. The horizontal positioning is fine but for some reason the vertical gets stretched every time I power up. I also noticed that when I set it perfect before starting to play, the bottom starts to creep up. Not a lot, but enough to notice that it's not in the same position I set it to when I started.
 
I have everything in stock in the USA and better quality than ....
 
So I installed the replacement pot and same issue remains. I set the screen where I want it and the next time I turn the machine on the image is all stretched again. Anyone heard of this issue before?

Sounds like you might have received a bad cap when the cap kit was done.
 
Anyone other ideas? Adjusting the vertical size every time I turn the machine on is getting old real quick.
 
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