Tried getting my Nuvi 670 repaired by garmin only to find they no longer offer service my model of GPS. Found a place called SHARCNET-USA who was very helpful and they repaired my unit and had it back to me in less than a week. They emailed me when they received my GPS and when it was about to ship back. They provided me with a full repair report along shipping tracking information. I was very pleased with their service. read full review »