My funtana did the same thing. The first problem was a bad r700 receiver. I tried a hitech receiver and it stopped immediatly. I still get a hi-voltage (swamping) when I first turn the [lane on with a fresh charge. I am a diehard jr man having both an R1, and an 8103, but that r700 is a POS receiver. I would give Horizon a call, ask for JR service. Good Luck. Ron