Blast city grounding issue?

indierocklocks

Geese's Thug
Joined
May 28, 2013
Posts
270
Any help appreciated.

For some reason out of the blue my P1 loom started putting directions in an auto fire type state--making it impossible to select a character in KOF98 for example. And for certain games the buttons are pressed constantly.

When I plug the same amp plug into p2 using the same stick/buttons the problem stops.

I popped the ground pins out of both ends of the amp--and the connections to the wires look fine.

What could be wrong and what should my next step be? I do have a multimeter if needed.
 

indierocklocks

Geese's Thug
Joined
May 28, 2013
Posts
270
Thanks Xian Xi...that did the trick--thought I did that in the hardware test settings...but I may have had my buttons messed up. Flipping all the dips on the board took away doubt. Thanks again.

Edit: just curious as to how the backup ram works and what exactly it stores? It may help for me to understand it for the future of troubleshooting.
 
Last edited:
Top