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Hi there and welcome
Can you tell me how many times the light is flashing in sequence?
Disconnect everything from the TV then only connect the power cable and nothing else
then turn it on
Tell me what then happens please
Please disconnect it to rule out an issue with the antenna port
It is the mainboard that has faulted.
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.
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