Re: Am I crazy to buy another Garmin GPS
If you've gone through 4 units served by the same power source then I would be suspicious of the source. Electronics don't like spikes or low voltage.
Have you checked out Garmin's help line via internet? They've been extremely helpful to me and they have a flat fee repair service for non-warranty units. They couldn't fix my 8 year old Fish Finder/GPS unit so they sent me a new one for the price of the repair ($310).
Heck, it would have cost me more than that just to change the hole it came out of (to fit a new, different one) which was a carbon fiber panel!