My home theater system was custom installed and included the MX-900 and MSC-350. It had been working perfectly fine, controlling a Denon receiver, PS3 (using the Nyko USB IR receiver), FIOS stb, and VCR without any trouble.

Two days ago, RF controlled devices began to respond intermittenly to remote commands. I noticed the red lights on the IR/RF convertors were steady as though commands were being sent out (which wasn't the case at time), some were flashing for no reason.

I haven't been able to figure out why this is occuring. Any thoughts?