I had one of my GXV 3610 fail today. I use synology security station and it reported about 40 disconnects yesterday. After some trouble shooting I finally opened up the camera and snapped this picture.
Basically, the wire insulation is breaking down and causing wires to short out. This camera is located inside and I have had it installed for less then two years. I would think that this camera should have lasted for more then two years.