Neo Geo 111-in-1 Problem

troxel

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Donor 7 years: 2015-2021
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Not really knowledgeable on these, and bought a used one. Came boots up fine, but only 1 out of every 4 game works correctly. The ones that don't work have gfx corruption on them. Looks like a bad RAM on the games. The games will boot and controls and sounds work fine.

Does the game just need a good cleaning or is this a common problem?
 
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If the simplistic games work but the gfx intense ones dont I would say it is a bad upper address line on the roms. Cleaning the cart connector is the first thing to do in any case.
 
Cleaned the cartridge and still having the same problems. I will look into it a little bit more tonight if I have a chance. Thanks Womble for pointing me in the right direction.
 
Was having a similar problem with my 161-1 except it was with all of the games. Just graphics corruption, everything else was fine. I pulled the board and cleaned all of the connectors with a q-tip and alcohol not expecting it to make a difference. Put it back in and everything was perfect. It's worth a shot.
 
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