Neo Geo MV1

robgest

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I may need a new board. Mine has the green screen of death and Im not sure if its the crystal or something else.
Anyhow does anyone have a working board that they would come off from? Give me a price or if you would be willing to trade for a cart or two I have Samurai Shodown 3 and Shock Troopers.

Thanks
 
Green screen of death = Clock/Calendar failure.

Make sure the D4990 chip has +5v on the upper left most pin when the board is powered on. If it doesn't then the corrosion ate the power trace coming from the battery backup section.

If it does, replace the crystal. It's a simple 32.768KHz crystal.

Above all else... remove the battery and clean the board the best you can.
 
It doesn't have 5v on 14. can you explain what area I can solder "to-from" and should I just remove the battery without replacing it?
 
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