Long shot, but looking to replace my 11 yo Zumo 550. It has seen better days
Love the unit and already have the locking mount hard wired to the RT, so would really like to stay with the same unit. Lost a button several years ago (LH side). A piece of wadded up paper towel covered with electrical tape served well since
Most recently, the touch screen started to go wonky, and just yesterday I noticed the power button also exited the unit.
If anyone has a unit for sale, please PM me. Thanks!