Hey thank you for the response. I included a link to my post because it has a video of the sound. anyway…. https://forums.syntaur.com/t/any-help-appreciated-yamaha-clavinova-cvp-98-sustain-pedal-noise/9245
I opened up the DM board, inspected it for obvious signs of oxidization or cracked solders, and I did what you suggested with no change. Perhaps it could be failing caps? they dont seem swollen but since grand piano is the most complicated voice maybe theyre not able to handle the high amplitude