Futari Black Label PCB Problem

[superpretendo]

Hello everyone,

A problem has just surfaced on my Mushihimesama Futari Black Label (Japan Region) PCB. When plugging it in for a gaming session Monday night, I discovered that the down direction is not working on the player one side. Tested it on 4 different cabs, and it is having the same issue. I have visually inspected the PCB and JAMMA edge and it doesn't APPEAR to have any broken traces or anything, but then again I am not a PCB repair expert by any means. Does anyone have any experience troubleshooting Cave's CV1000 games? Or has anyone seen this issue before?

[Pasky]

I don't know that exact pcb's layout, but sounds like a pullup resistor died for the 'up' of whatever playerside is broke. Check if it's floating.