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  1. Bally - Silverball Mania MPU LED solid green - pinside.com

    Bally - Silverball Mania MPU LED solid green By Rodster 60 days ago 8 posts 3 Pinsiders participating Latest reply 49 days ago by Rodster No one calls this topic a favorite

  2. Modern Williams System 7 MPU Replacements - Pinside

    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 …

  3. Best Williams System 6 Driver Board / MPU replacement?

    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 …

  4. 1977 Bally Eight Ball Lamp and MPU Issues - pinside.com

    Jan 14, 2025 · Voltages look good. MPU should be booting or at least giving you a flicker. Solenoid board is working so other than replacing the large filter caps I wouldn't replace that. Rectifier also …

  5. Troubleshooting Stern MPU 200 boot issues - pinside.com

    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 …

  6. Data East / Sega MPU - Will not boot *SOLVED - pinside.com

    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

  7. Black Knight MPU and Driver Board - pinside.com

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

  8. WPC - CR2032 MPU install | All modding! | Pinside.com

    Ok so I got tired of changing batteries in my off board battery holder. Updated all my WPC, System 11 and Bally MPU's to CR2032 holder and battery. This mpu is from my Medieval Madness. Hope this …

  9. Rottendog MPU 9211 help needed | Tech: Alpha-numeric | Pinside.com

    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

  10. Looking for some help troubleshooting Bally MPU LED

    Oct 10, 2022 · Looking for some help troubleshooting Bally MPU LED continuously on, no flashing. I'm using the Bally F.O. 560-1 repair procedure. I have 4.2 volts on pin 2 of U9 and the procedure says …