I just received a Kenwood TM-742 from a friend who informed me last time he used the radio it worked fine. I installed the radio in my Ram 1500 Pickup connected directly to the battery. At first the radio appeared to work fine; however, we I started the vehicle the screen went blank. Pressing the PWR button did not turn the radio back on. I recycled the power and hit the power button and nothing happened. Finally after repeatedly pressing the PWR button many time the unit came back on. I repeated the process again and instead of the screen going blank a dash appeared in the middle of the screen and the back light of the display seem dimly lit. When the screen is normal the radio is operational with no problems. It's just the power issue I'm experiencing. Does anyone have any thoughts on the issue?