LED
Led tv’s common failures include Backlight failures , broken HDMI sockets , or general power faults
Sound but blank screen can be a backlight issue or a loss of video information fault .
A full set of backlights can be sourced for nearly all makes and models within a day or two
OLED
Power faults are becoming more common , no or intermittent power on some 65 OLED models and relay clicking in standby mode
LCD
The older LCD tv’s are still great televisions , reliable and well worth repairing .Many LCD faults regard start up from cold which could have progressed gradually over a few days to the point where the tv refuses to come on.If this is your symptom and you were happy with the functionality beforehand , give me a call and there’s a really good chance it will be up and running same day
Plasma
You still have a plasma TV ? Lucky you
Excellent picture , sound and reliability and well worth hanging onto if it can be repaired , it’s certainly worth a phone call