I have a six year old BMW / Garmin Navigator III / Streetpilot. Recently, something started to happen on an intermitent basis that resembles somebody touching the screen in the middle left hand portion of the screen. It behaves as if someone is touching the same spot and holding their finger there. As a result, the GPS defaults to calibration mode. Yes, I know I can send it to Garmin and have it rebuilt for the cost of a new one, but I sure as heck don't want to if I don't have to. I am pretty good with electronics, and figured I'd bust it open and give it a good cleaning.
But before I do, I wanted to see if there is any knowledge out there. Thank's in advance to anyone who has knowledge of this and responds.