A:Answer Hi there, Please perform the following troubleshooting steps below:
1- Unplug the television from the power outlet.
2- Remove all connections from the back of the television.
3- While everything is unplugged, press and hold the "Power" button on your TV for 60 seconds.
4- Connect all devices back into the television, making sure all of them are properly connected
5- Plug the set to the power outlet, if possible, to a different power outlet or a surge protector
Rudson S.| Insignia Support. https://www.insigniaproducts.com/contact-us
6- Turn it on and test it.