No backlight or sound to tv


Novice Member
My tv has stopped working this morning. Went to turn it on for the kids before school and it has power and turns on but no picture/backlight or sound.
Started to troubleshoot and found with the torch/flashlight test that I have colour on the screen with many vertical lines and each end of the tv has a thick black vertical line.

When disconnecting the lead from the power board to the main board I have nothing on the flashlight test and backlights still do not illuminate. When removing the ribbons from tv panel to tcon board again I have nothing. When reconnecting everything back up again still no backlight or sound just the vertical lines on the flashlight test.

Tested the the the output to led drivers and that was between 140v -190v so I have power to the backlights. Tested 12v inputs on main board and they have 12v.

So I’m now stumped as to what could be causing this. And I can’t gain access to the leds to check for obvious damage to them.

Any ideas before I start replacing tcon-main board?

Tv is
55” Hisense H50AE6100UK

Thanks in advance

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