I have heard of such a thing only in my personal case it was a solution not a problem.. I have 3 TV's (two in the bedroom cause one is really a computer monitor but it can TV If I wish) One is a Samsung. Which I got off the "Scratch and dent" table but no remote.. THankfully it replaced a Samsung. same remote (Samsung only has one remote it turns out or rather one set of codes)
THe other. A "No name" from wal-mart
I got a new Pawn Shap special (Again no remote) for the main tv.. Turns out it uses the same codes as the "No Name" so my remote worked L)
Now how to solve your problem
YOu need two things.. One is your remote and the other is a piece of Gorilla Tape (or black electrical tape) about 1" square should do it.
Inspect the readio and see if you can spot the "Eye" (Sensor) test by holding the remote directly against the sensor and pushing a button.
WHen you find the "hot spot" for sure, and confirm it. Apply tape to cover'
Kind of like the Web Cam built into this computer.. If you hack it and turn it on in hopes of seeing me walking around the RV in an embarrassing state of dress.. You will see the back side of a piece of tape. nothing more. It's blocked. The ultimate "Turn off" for the camera.