RedX. Being that you have effectively reset the radio by killing and then reconnecting the power and the problem persists then it's obviously a fault internal to the radio. To pull it out and open it up and have a tech run through the chassis to find the dud component will cost you a leg, arm and leg! Honestly, piss the radio off and buy a replacement. If you go on Ebay you will find a single DIN stereo with USB and bluetooth for less than a hundred bucks and being that the install is simply a matter of matching the plug wiring and slipping the new single DIN unit in it won't cost you an arm and a leg. I reckon you'll get away with doing the installation and the cost of the new unit and still have some change from $200. Good luck.