Hi everyone.

I have started to have issued with the sound board in my Tee'd Off. The board works perfectly for 30 mins or so until it heats up. Then, the sound starts to degrade. It starts to degrade slowly with some music or sound effects sounding off, but eventually it gets to the point where the sound distorts and most of the sounds revert to beeps and boops instead of full sound effects. I shot a video of some of the sound effects once they start to degrade:

The best examples of the degraded sounds are the multiball music (it sounds hilarious), mystery award music (reverb sound), spin wheel award sound effect, and the end of game music (echoes and continues on for longer than it should).

Any ideas on where I should focus for troubleshooting?

I tried another sound board and recorded the music as it is supposed to sound. Very different.