Check if the IR sensor works by positioning the top of the remote control in front of the camera of your cell phone, and confirm if the IR sensor illuminates.
✔ If you see a beam:
- Remove any obstacles covering the TV’s IR receiver
- Try reducing the distance between the remote and TV set
╳ If you don't see a beam:
- The batteries of your remote control might be depleted. Try replacing them.
If you are confident your batteries are not depleted, move on to the next step.