On Sat, 15 Apr 2017 08:23:53 -0700, "David Farber"
wrote:

This Yamaha MOXF8 keyboard has one note that plays too loud when more than
the slightest of pushes is given. I moved the keypad underneath to a
diffenerent octave and the problem followed the keypad. In other words, the
note that was too loud, switched to the same note but in a different octave.
I can't see anything visually wrong with the keypad contacts. There are two
pc contacts per note. One rubber keypad contact opposite the pc contact
extends just a hair more than its adjacent rubber keypad contact. How does
this translate into detecting how loud to play a note and how do you think
this relates to the note that is too loud?

Thanks for your reply.

Total guess on my part, but it probably detects how fast you press the
key (rather than how hard you press). If the two contacts are made
simultaniously, it thinks you want a loud note. (Or maybe, one
contact is stuck on? Or, an input port on an I/O chip is bad?) Good
luck.