2) Unplug the television power cord from the electrical outlet.
3) Let the television remain without power for 60 seconds.
4) Plug the power cord back into the electrical outlet.
NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
5) Turn on the television.
If the issue still persists, the TV will require service.
Refer to the below link to locate the nearest authorized service centers.