TV Display Not Working


I am a subscriber from the UK and I have a Hitachi TV 50", after 5 years of use the display seems to stop working. The sound works perfectly fine. But when I turn the TV on, the display will come on, then after 3 seconds it basically wipes out like something is fused.

I know its not the HDMI port, the tv menu doesn’t even work. There is a component in the TV that needs changing, I just wanted to know what it could be before I open it up and repair it.

Google seems to give me YouTube videos of 3-4 steps to take like turning it off waiting for a while etc. None work. I know it’s something else.