Don't fret over that. It will probably turn out to be something simple.. well, we can all hope.

Regarding the Airtronics systems, well, I have an RD-6000 and an RD-8000 and love them. They have given me great service even through my abuse of the TX's.

I have a Spektrum DX7 also which gets most of the use lately, but for crystalized RX's, I still stick with my Airtronics (now mostly used on my electric powered planes).