Jan 1, 2026 · Bally Eight Ball blows F3 fuse unless MPU J4 unplugged By ezed123 40 days ago 7 posts 3 Pinsiders participating Latest reply 39 days ago by ezed123 No one calls this topic a favorite

Quoted from barakandl: Have someone rebuild your MPU unless it is missing or very damaged. I would offer, but i am taking a few months off to do a bunch of home improvement projects. Once a sys 7 …

Sep 2, 2025 · The only obvious thing that’s not right is the voltage at TP1 on the mpu which reads 4.0v I have replaced the rectifier board and rebuilt the harness between the rectifier board and the …

Oct 30, 2016 · What is the best / most cost effective option for replacing the MPU / Driver board in a Williams System 6 pin with new boards? Rottendog? Are most new boards pretty much plug and …

Pretty classic symptoms of a break between MPU J4 pins 1-4 and SDB J4 pins 3-6. Test continuity from the back of both boards to verify wiring, pins and headers.

Dec 4, 2023 · I just installed a new Weebley MPU and machine still won't boot. I'm getting 7 flashes on the MPU and nothing on the displays. Not sure what I should be focusing at this point? These are my …

WPC89 MPU for Williams WPC games with great improvements Shop highlight Ready for an MPU with great features and no hassles warranty? Remember 5V power reset issues? This board has a 12V to …

Data East / Sega MPU - Will not boot *SOLVED By doompin 2 years ago 4 posts 3 Pinsiders participating Latest reply 2 years ago by Dan_Halen Topic is favorited by 1 Pinsider

Rottendog MPU 9211 help needed By JanS 2 years ago 2 posts 1 Pinsider participating Latest reply 2 years ago by JanS No one calls this topic a favorite

Black Knight MPU and Driver Board By Acampero 13 years ago Jun '12 2012 Aug '16 2016