Hi there and welcome
Can you tell me please the make and model of the device with the issue?
Can you please remove the power to the TV (so unplug it from the power socket).
Then on the actual TV, hold the power button for 60 seconds then release.
Then wait 10 minutes, connect the power again to the TV, turn it on and tell me please if it is now operating correctly.
Let me know the results please
yes, but when you can, can you remove the batteries from the remote and tell me if this stops it please
just to clarify, when you took the batteries out of the remote, it did not try to go up to 100 again?
ok, are you still able to get to the menu on the TV?
ok, the issue is then with the TV
It is the internal mainboard that has faulted, this now confirms it.
I am really sorry about this and you are going to have to return the TV to have this replaced. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you.
I am really sorry about this, and if you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking one of the stars at the top of the page, then submit, that would be greatly appreciated.