Facing TV Problems? Ask a TV Technician.
Is the power-light blinking and pausing please like 4 blinks pause 4 blinks?if so please let me know the amount of red blinks between pauses please?
Try a full reboot
Disconnect the set from wall-power
Whilst disconnected hold down the power-button on the set itself for 10 seconds
Remove all the inputs from the back of the set
Wait 20 mins
Replug in set and switch on do you still have 7 blinks?