Ok, so we had this issue with a Sony RM-BR300 and some BRC300 Cameras. The BR300 is a remote control for the BRC300 cameras (Sony Pan, Tilt, Zoom Cameras). It can control up to 7 cameras. With multiple presets per camera. After a number of power drops, and spikes, we could no longer turn cameras off, or contol them with the BR300 controller. We could move the cameras but nothing else. I finally was able to reach someone at Sony, and they told me what to do. Here is the solution. You have to manually unplug each camera for about 60 seconds. Then make sure they are turned on so that after you have reset the unit, it finds the cameras. Then you need to reset the controller, the steps for that are With the power on, hold the Reset, Preset and L/R Direction buttons, until the buttons all flash quickly, then slow down. Release the buttons. Turn the unit off. Turn the unit back on. You should now have full control of the cameras and unit. At least that worked for us. Your troubles ...