Santinelli ME1200 issue

Hey all:

My Santinelli ME1200 edger has been running great until just recently. I had an I/O board error a while back and then everything seemed okay but now the machine won’t make any of its chimes or beeps when it should and soft mode won’t run right even though it’s checked. I dotted a super hydrophobic AR lens next to the block and could watch the lens twist while roughing because the edger was too aggressive. It’s also a lot slower when changing things, like there’s substantially longer pause between hitting the start button before it does anything, etc. Sizing, bevel location and all of that is fine. It turns the water supply on/off appropriately. Oh I also reverted to previous firmware just to try anything and everything was the same.

Basically:

Slow to react
There are no audible tones
No soft mode even though it’s activated

Thoughts?