Bally 6000 BV Comm eprom, what position?

[Simon Barsinister]

I have a Bally 6000 MPU that the WBA bill acceptor will not function with.  It cycles but does not light up.  The jumpers on the MPU are correct for WBA.  I seem to recall that there is a socketed eprom that is directly tied to BV Comm on the Bally 6000 MPU, but I can't readily find it on the schematic so far, does anybody recall off-hand which eprom position controls the BV Comm?

[Sunrise Side]

Steve. The coin mech switch on the front of the MPU is in the UP position? Tim

[Simon Barsinister]

Hey Tim, thanks for the reply.  Yes, coin mech switch is in the up position, and the problem is definitely following the MPU.

[Sunrise Side]

I have not had that issue before, so I will be following. Hopefully Alan Badbaud chimes in or others !!

[Badbaud]

If your DIP switches were set properly then U42 would be the next suspect.

[Simon Barsinister]

Yep, dips are correct for WBA, I will try U-42 and report back, thanks Badbaud!