My keyboard sustain now has reversed polarity on random occasions...have tried everything, and it's not my pedal because the same things happen with different pedals
I have a p-95 which I bought 5 years ago, and an M-Audio sustain pedal.
Music - M-Audio
Answers & Comments
I would suspect the sustain pedal jack on the keyboard is either dirty or defective. Try using some contact cleaner first, and if that doesn't work replace the jack.