Neo geo 4 slot big red pickup repair help

Turboduo82

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I snagged a 4 slot 20 minutes from me thanks to my brother who got a heads up on a garage sale from a freind who knew we are into arcades. They had this and a big blue gen 2 and a tempest converted to klax. My brother snagged the big blue and I got the neo geo with 4 games.

The neo geo won't boot the games it turns on and goes to the grid and just stays there. I can hit left player start and can get into the test menu. I cleaned and reseated the games with no luck. Anyone on here repair these? In the process of doing a recap on the monitor due to a wavy screen. It's really clean except for the lockbar hole on front.
 

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Check your dip switch settings to make sure they are all off.
 
First priority is you need to check the battery, which is between the boards on the right hand side. It looks like a barrel on the side. If it's still present you need to remove it ASAP, as it will leak and damage the boards. Search for the coin cell mod and this will give you more.

The grid screen is what is displayed when the system can't read a cart. The fact that the PCB is missing the shield is not encouraging. Cleaning the carts may help, but you may have to clean & check the slots. And try to move the cats around. The system will disregard slots not in use. If you go into the bios (test button) it will tell you if it sees carts in various slots.

Also you can download and burn the diagnostic roms to help TS the board. The unibios also has some TS tools.

Arcade-projects or neogeo forums might be a better source for you as they run more 90s stuff.
 
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