MOTORDOME BALLY MIDWAY PINBALL MACHINE help 1986

TiffanyArcade

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Hey all, I have a Motordome pinball machine. I am kind f lost on why the memory doesnt save after I turn the machine off and turn it back on for the Free Play and for coins. It doesnt read my coins thru the slot it makes the sound but doesn register thru the game. Any help?? I know the Free play code is 67 and I dont have the manual no more.
 
Hey all, I have a Motordome pinball machine. I am kind f lost on why the memory doesnt save after I turn the machine off and turn it back on for the Free Play and for coins. It doesnt read my coins thru the slot it makes the sound but doesn register thru the game. Any help?? I know the Free play code is 67 and I dont have the manual no more.

The battery on the MPU is probably dead. If it's original remove it and install a remote battery holder.
 
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