Has anyone had an issue with the sound going to MAX on it's own during a game? The only way to turn the volume down is to shut the machine off and back on, or open the coin door and turn it down, or drain the ball. Only after you do one of those things will the volume go back to normal. It is random when it happens. The sound will completely cut out, give one bong, and then MAX volume.

I have replaced the interconnect cable twice with new ones, swapped out the sound board with a known 100% working one. Br's and large caps on the driver board have been replaced as well as the small cap at C2. I have a pinled mpu in the game that has worked great for 2 years. Everything on the machine works great (all switches, lights ect.).

Any help on this would be great.

PinballManiac40 Do you have anything to add?

Correct, the machine itself is not resetting. It will continue to play. I am puzzled as well.

That will need to be the next step. I will check those connections and report back.

Impossible. Has a 1 year old PinLED MPU and it is clean.

I have not yet. The machine is no longer in my possession which makes testing more difficult as it is an hour away from me, but I want to get this corrected for him. I will eventually check this and report back with my findings.

Thank you to all who chimed in.