HELP !

4440 topics in this forum

1. MPU4 No Lamps and Weird PSU Readings? 1 2 3 4

   By crazi, June 24, 2012
   • 98 replies
   • 7k views
   • 
   • mr.t0800
   • July 9, 2012

2. mpu4 no led after battery damage

   By jkrollin, August 28, 2013
   • 5 replies
   • 808 views
   • 
   • jkrollin
   • August 31, 2013

3. mpu4 no led display

   By baby gee, November 17, 2015
   • 15 replies
   • 1.5k views
   • 
   • Rzsch
   • December 15, 2015

4. MPU4 Not Paying Out

   By stevende85, October 5, 2017
   • 14 replies
   • 1.7k views
   • 
   • quattrohead
   • October 6, 2017

5. MPU4 number 2 lamp problem! 1 2

   By netdent, June 30, 2019
   • 39 replies
   • 2.3k views
   • 
   • netdent
   • July 20, 2019

6. MPU4 Oki Chip

   By Guitar, May 3, 2010
   • 2 replies
   • 791 views
   • 
   • Guitar
   • May 3, 2010

7. mpu4 open circuits 1 2

   By stonyat421, October 22, 2014
   • 27 replies
   • 2.4k views
   • 
   • john_disco
   • October 26, 2014

8. MPU4 parts

   By Bobbidoo, August 10, 2011
   • 10 replies
   • 1.8k views
   • 
   • booze.net
   • August 18, 2011

9. MPU4 Parts identification?

   By Nigel21, March 25, 2009
   • 18 replies
   • 1.1k views
   • 
   • VINNY130172
   • September 7, 2009

10. MPU4 PAYOUT ISSUE

    By booze.net, July 17, 2009
    • 8 replies
    • 1k views
    • 
    • booze.net
    • July 21, 2009

11. Mpu4 payout issue

    By dazza2471, July 28, 2025
    • 2 replies
    • 329 views
    • 
    • dazza2471
    • July 28, 2025

12. MPU4 Payout repair help

    By sam20sam, September 21, 2013   

    • Components needed
    • 1 reply
    • 706 views
    • 
    • VINNY130172
    • September 21, 2013

13. MPU4 PIA hard test alarm? Help please

    By cashbeast, June 25, 2022
    • 8 replies
    • 765 views
    • 
    • cashbeast
    • June 26, 2022

14. MPU4 power supply

    By john leo, October 1, 2009
    • 2 replies
    • 931 views
    • 
    • VINNY130172
    • October 2, 2009

15. MPU4 Power Supply

    By chasnbons, December 3, 2012
    • 6 replies
    • 990 views
    • 
    • borgred
    • December 4, 2012

16. MPU4 Power supply

    By alex74, April 14, 2016
    • 2 replies
    • 850 views
    • 
    • alex74
    • April 15, 2016

17. MPU4 Power Supply Parts - Bridge Rec. - Viva Las Vegas

    By Red2five, March 24, 2019
    • 5 replies
    • 762 views
    • 
    • Red2five
    • March 25, 2019

18. Mpu4 power up issues

    By dazza2471, June 26, 2025
    • 5 replies
    • 734 views
    • 
    • dazza2471
    • June 27, 2025

19. mpu4 problem

    By brandon33, September 5, 2007
    • 24 replies
    • 2.3k views
    • 
    • MAGIK
    • September 8, 2007

20. MPU4 problems!!

    By andrew96, August 8, 2013
    • 4 replies
    • 1k views
    • 
    • mavroz
    • August 9, 2013

21. MPU4 PROGRAM MODULE SOUND ISSUE

    By booze.net, August 18, 2009
    • 6 replies
    • 948 views
    • 
    • VINNY130172
    • August 20, 2009

22. MPU4 Prom - Downgrade

    By kurtern84, January 15, 2022
    • 12 replies
    • 1.1k views
    • 
    • kurtern84
    • January 27, 2022

23. mpu4 prom card

    By roger821, August 5, 2011
    • 5 replies
    • 928 views
    • 
    • MAGIK
    • August 6, 2011

24. Mpu4 PSU

    By sam20sam, December 29, 2023
    • 1 reply
    • 15.1k views
    • 
    • fruit58
    • December 29, 2023

25. MPU4 PSU fuses

    By YadaYada, July 14, 2012
    • 9 replies
    • 1.9k views
    • 
    • jonwarby
    • July 17, 2012