Gottlieb Solar Ride (Gottlieb, 1979) Gottlieb System 1 RAM chip (5101)

[altersaddle]

I recently replaced the 5101 RAM chip in my Solar Ride. It worked great for two weeks and now is back to pre-repair behavior - not remembering more than one credit, no high scores.

Does it makes sense for this chip to fail under normal duty? If so, can I use one of the modern adapters that lets me use a RAMTRON NVRAM instead? I haven't yet found positive confirmation that these devices will work with my System 1 MPU.

If I can't use one of these devices, what precautions can I take on the MPU board to prevent my last 5101 from being fried?

 

[pinballdaveh]

as far as i know there arent any ram subs for the 5101. cmos chips are known to be static charge sensitive to too much handling. there are ground mods that should be done for protection also. pinwiki gottlieb system 1 shows them.

 

[altersaddle]

I was hoping to use this one:

http://lockwhenlit.com/anyPin.htm

I've emailed the vendor and he hasn't tested it with a System 1 MPU yet.