Chosen Solution
Why does my screen flicker then the screen will go black
‘’’++@nmvmmm++’’’ could be for a few different reasons. Most commonly would be a bad main board. Other possibilities are bad power board or failed backlight. Once your TV screen turns black, darken the room and leave it at a channel that you know is working. Shine a flashlight at an angle against the screen and see if you can make out any silhouettes etc. If so, it is most likely a bad backlight. to assist you further we would need to know the exact model and would need you to remove the back cover from the TV and post plenty of good images of your boards and wiring with your question. That way we can see what you see. Use this guide Adding images to an existing question for that.
