I don't have any experiences with rottendog powerboards. Can you check the voltages? Maybe the 5 Volts is a bit low causing the reset circuitry at the soundboard to trip. The CPU is the same circuitry however, i would expect some problems there also.

The band/flatcable from CPU board to soundboard is also a possible source of problems.

Marco

You should be able to put the original back in and start a game with no displays and see if the sound cuts out

There are different 5v at the sound board. There's logic 5v and there's analog +/-5v that is derived from 12v through a 7805 and 7905 on the sound board (that's why the schematic has 5A in some spots). If your logic 5v was dropping to below 2v, the entire machine would reset as Marco suggests.

Have you upgraded your speakers in your Hook? Unfortunately, there might be a design issue on the 12v rail with the RD supply that could only be fixed with a mod:

https://pinside.com/pinball/forum/topic/rottendog-data-east-power-supply-board-design-issue

viperrwk

I'm having the same issue with my Hook as well when the ball goes up the left ramp. From what I can tell so far is that the red rope lights are causing the issue, and I've also noticed that one set of the three sets of lights in the rope are not working and only two of the three sets of lights in the rope are working correctly. If I unplug the small driver board in the upper right corner the sounds issues all go away. I installed a NOS board and the problem is still there. So I'm thinking whatever controls that third set of lights from not working is also causing the sound problems. Did you ever figure out anything more on this then what I've just discovered ?

Thanks,
John P. Dayhuff
Battle Creek, Mi
269-979-3836

Figured it out for you, the problem is with both xpin and rd powers supplies arnt made for both hook and st as they claim , both have a chaser board that require different power requirements unplug the chaser board problem solved , its the top right circuit above the mpu

Nevermind didn't read dayhuffs comment , I got the same issue also , going to try different chaser board

Have you tried reseating the sound ribbon cable at the sound board and the other end at the MPU board? This fixed issues with 3 different DE games I worked on this year where some sounds kept repeating when they shouldn't have. Sounds sometimes cut out at wrong times as well.

i just got done switching power supplies with another DE game i have and it works, it is an issue with xpin power supplies, seems as though when the GI goes out and the rope lighting is still on it affects sound and only then

What model number is this board?

xp-de5047 Rev E , rotten dog has the same issue, from what i gather it mostly stems from the fact both alternative power supplies are regulated as the original isn't

and pinscore works but i cannot locate one