Ok, so we finished sorting a Simpsons Party recently and tested it for a few weeks,
we replaced the top board as it had battery leaked, we took a chance on the lower board thinking it wasn't too bad.
We had sound perfectly for a while (few weeks) on the Rottendog board replacement. The machine was moved to customers premises and after a week we now have corrupt sound.
We had the speakers out and cleaned the grills.
NOTHING is coming out of the top two speakers, but the BASS speaker is making this noise.
What is going on?