HELP: Nord Piano 4 Problem

[Goodsaw]

Dear Friends,
I’ve acquired a used nord piano4. It perfectly worked for there days, but suddently a strange noise has appeared when I use the piano modelling only when I’m playing.It’s like an oscillator overlapped to the piano sound but the synth banks work properly. I’ve reset the instrument and updated the firmware but this problem persists. Could you tell me if you know about this problem? Thanks a lot for your attention, my best regards

Attached is an mp3 of the noise

[cphollis]

Wow, that's quite the interesting glitch. It almost sounds programmed!

One of the things I always recommend when a Nord starts acting "strange" (strange noises, strange panel flashes, etc.) is to open the unit up and reseat all the ribbon cables. This may or may not solve your problem, but it solves a lot of them!