Has anyone had any problems with the Explorist Series from Magellan? I own an Exp. 600 and it died on me after 4 months. I sent it in on warranty and received it it in no better condition, with no explanation as to what was done. After dealing with Awful customer service (from INDIA no less), I called California and reached the Quality Assurance Dept. I was told to send the unit back UPS Red on their dime and they would send a new one. My dealer suggested that he do the initial set up in case of failure again. The unit powered up fine and we were able to set all of the parameters. As a final check, my Explorist 600 was tried on the AC Power cable and did not work. The dealer tried his own supply and the unit powered up with no problem. He then tried mine again and the GPS failed. This time for good! It would not run on batteries, his supply, or anything. It POOCHED! It appears that the power transformer is defective.( They did not send a new one with the new unit>>>) As I am going to have to send this in again, I am beginning to question the Magellan Quality now. I checked the transformer, and it is putting out 12V instead of 5.0 V Please be aware that this could occur to your Explorist. Trying to deal with the offshore Cust. Service is a total joke!!!! Someone else posted the same problem on Amazon. BE AWARE that this could be a product defect that could affect your Explorist (most models) Please let me know if you have had this problem. JIM