Omega Race battery relocation questions.

Chevy Metalhead

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Finally got my Omega Race cocktail working (98%, still has a small video glitch). But it is time to get a battery back on it to save the scores. What is the best way to do it. Went to Radio Shack today and they had a remote 4 AA holder, was wondering though if I put a diode in the first spot, would 3 batteries (4.5 V) be too much? It had a 3.6V battery on the board. Thanks!!
 
Use NVRAM kit. (if you can find one; example below ...)

http://forums.arcade-museum.com/showthread.php?t=319219&highlight=nvram

These battery eliminator modules replace commonly used arcade RAM chips such as 5101, 6514, 6116, and 6264. These modules eliminate the need for a battery and prevent corrosion due to electro-chemical migration caused by having a constant voltage on the PCB (battery).

These all use ferroRAM chips and they all have the proper support components to convert the TTL signals to the proper levels required by the CMOS ferroRAM chip.

The 5101 and 6264 modules contain the proper decoding logic in order to properly decode both chip select pins.

5101 module:
The 5101 module replaces 5101, 6501, and 2101 RAM chips.

Has on-board logic to properly decode both of the 5101 chip select lines.

Will work in many Bally-17, Bally-35, Williams Systems 3, 4, 6, 6a, and 7 systems. Email me using the link at the bottom of this page if you are not sure.

Also works in Omega Race.
 
too bad the guy for those nvrams never responds to an email. I bought one from pinitech. the one with the dual CE.
 
Ok, what did I do wrong? Installed it today and it isn't saving the scores. I am getting about 3.8-3.6v at the solder connections on the board, Where else can I check the voltage to see if the traces aren't conducting? Thanks Todd
 

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Ok, what did I do wrong? Installed it today and it isn't saving the scores. I am getting about 3.8-3.6v at the solder connections on the board, Where else can I check the voltage to see if the traces aren't conducting? Thanks Todd

Hard to tell from that picture but is some of the solder on the other components corroded ?
 
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