I have a Relay G30 system which I’ve used with an electric violin for years. Electronically, it’s in perfect condition and functions just as I’d like, but the rubber-like material on the outside of the receiver has degraded and is sticky to the touch. It comes off whenever the unit is handled, and I end up with black sticky gunk from it on my hands every time I set up or pull down.
Can anyone suggest what I might do about it other than junking an otherwise perfectly good device?