DR500GW will not record, audio switch not working, the only voice message is "insert SD card if it is not inserted, it will ping my iPad but when selected error message say's signal to weak move closer to camera, the iPad is less than two feet away? I have tried replacing SD card, no change, I have reset camera with reset button, no change. I have had this camera for about 4 years with no problems, is it time to toss it and find another camera? I do not know of any repair shops that could help me. Any advice about this camera would be greatly appreciated.