go7-cbo issue

exide31

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Finally got a go7-cbo to work in a ms pacman cocktail. I was able to get a great picture while the top of the cocktail is tilted open. When I close the top the screen turns to crap. All the colors are terribly off and the screen jumps slightly. Open the top and tilt back, great picture. Any thoughts to fix this? Thanks
 
Yep, that is a common degaussing issue with midway cocktails....
It needs to be manually degaussed. You can try powering it off while the top is open and the picture is good. Close the lid, and then power on. If the internal degaussing circuit is working well, this may help your issue. If not you will need to find someone with a manual degaussing coil. Or buy one if you plan on staying in the hobby! I use mine all the time!
Bob Roberts sells them for around $40....
Available here.....
http://www.therealbobroberts.net/parts.html#tools
 
I"d also be curious to know if the game is original inside. There should be a shielded isolation transformer in there, and possibly even a metal plate between the power brickand the monitor.
 
It is original, nothing between the monitor and power supply. There is a piece of cardboard on side of monitor to keep bright lighting from interfering. The degaussing ring helped out somewhat, but the lower portion of the game is still off.
 
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