N Cook schrieb:
Looks like another victim of lead-free solder in the power handling areas.

Reason for posting - idle curiosity. I'm not going to unnecessarily delve
into the keyboard section to find out.
I was surprised to see just an 8 way ribbon cable going to an 88 key, 7+
octave keyboard.
I assume there is active multiplexing hidden in there , but would there be
"touchy-feely" action monitoring as well.?

Why not? I assume you'll find a keyboard processor and 2 contact bars to
measure the time/velocity of each key, possibly divides into 8- or
12-key groups.

Udo