"...It is becoming a tad unresponsive lately and I presume it cannot be repaired..."
I'd be tempted to take it apart and clean everything you could, maybe spray some tuner lube on it and brush the contacts and board clean. You have nothing to loose.
I'd be tempted to take it apart and clean everything you could, maybe spray some tuner lube on it and brush the contacts and board clean. You have nothing to loose.