Chosen Solution

After it was left for a few hours unplugged the TV won’t start anymore, it make the beep sound after I push the red button on the remote, and after a hissing noise and nothing. This happened before but, after 10 minutes it was starting again. Now it doesn’t anymore. I took of the back panel to have a look where the hissing is coming from, I’ve attached pictures. In the video I push the power button and the hissing noise comes from the place I’m filming.

Hi @omuleanu , Here’s the power up boot check troubleshooting flowchart, from the service manual for the TV. This is a good place to start to find out what’s wrong.