A television remote is a handheld device that allows you to control various functions of your television from a distance. 

It typically uses infrared technology to send signals to the TV, enabling you to change channels, adjust the volume, navigate menus, and perform other functions without having to manually interact with the TV itself.

If your television remote suddenly stops working, here are 5 things you can try:

1. Check the batteries: Replace the batteries in the remote control with fresh ones and make sure they are inserted correctly.

2. Clean the remote: Sometimes, dirt or debris can interfere with the remote's functionality. Gently clean the remote control, including the buttons and the infrared sensor, using a soft cloth.

3. Reset the remote: Remove the batteries from the remote control and press each button a few times to discharge any remaining power. Then, reinsert the batteries and try using the remote again.

4. Check for obstructions: Ensure that there are no objects blocking the line of sight between the remote control and the television. Remove any obstacles that may be interfering with the signal.

5. Use the manual controls: If all else fails, most televisions have manual controls on the side or back. You can use these buttons to navigate the menus and adjust the settings until you can get a new remote or fix the issue.