how to fix when Device Won't Respond to Remote Control Commands
Make sure your components are turned on and your TV is set to display the appropriate video source.
You must put the remote in the correct mode by pressing the corresponding component key (TV,DVD, VCR, AUX, SAT·CBL) so the remote know swhich component you want to operate.
Remove any obstacles between the remote and the component. Make sure to aim the remote at the IR sensor on the component.
Make sure the batteries are fresh and are properly installed. Replace the batteries with two new AAA batteries, if necessary. Reprogramming may be required.
Reset the remote. Remove the batteries, then press and hold the number 1 key on the remote for several seconds to reset the microprocessor inside the remote. Release the number 1 key, reinstall the batteries,and press the ON·OFF key. If the indicator light lights up, reprogram the remote and try again.If it does n’t light up, replace the batteries with new ones
Drastic Measures, if you suspect the IR module of tv is not working try these steps