My Oracle has lost it's video diversity controller (SERIAL NO. D2809377) purchased from RV on09 October, 2008 will only switch manually. when I switch to vid1 it jumps back to vid2 after a few seconds regardless of the video quality. Even when I swap RX inputs it always stays on vid2. The only way I could get it to stay on vid1 is if I disconnect the video input 2 RX, when I plug it back in it jumps right back to vid2. I've tried changing switching sensitivity, used identical rx, antennas and everything I could think of without any luck. It has worked fine in the past. Any help would be appreciated.