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Had this unit for about 10 months now. It was professionally installed at time of purchase (brand new) but just lately seem to be having a few probs...
Basically, if it gets too cold, the unit wont allow me to swith to CD1 or CD2 (changer) and often wont retune Radio. Also if car is parked up all day in sun (at work etc) the volume control sometimes stops working and again sometimes wont let me switch source or tuning!!!!
Cheers