Hi,My name is***** will assist you.I am sorry to hear that you are having this issue.
Is it the power/standby light that is flashing? If yes, follow the steps below to troubleshoot the TV.
If the issue remains unresolved after performing the power reset, that will be an indication that the Sony's main power board has failed and will need to be replaced.
The 5 blinks indicate the AKB circuit , the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function.This is most likely a failure on the C board.
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