My 2006 Crossfire Roadster with Chrysler Infinity Radio w/GPS looses power intermittently and then comes back on within a minute or so right back to the station I was on. Anyone else experience this problem? This is a weekend car with only 7500 miles and only happens maybe every third time we drive it. Not sure where to start. Thinking a power supply plug is loose but not sure how to access it. I'd appreciate any help