What happens if you change the batteries?
When you try change channels etc, what color does the LED flash on the remote? It may be set to TV only instead of Optik.
Were you able to find a fix for this? I am having the same problem 😞 I have changed the batteries on the remote and the light on the box still flashes green (as usual) when I press buttons but nothing changes on the actual TV.
@KatR199 power cycle the Optik Receiver. Remove the power cord from the back wait 5 seconds and re insert it. Let the box re-initialize and see what happens.
Or, if your PVR is as difficult to access as mine, press and hold the power button for about 10 seconds.
Failing this as a solution, you may need to reprogram your remote. Let us know.