Do I need to replace ribbon cables

Do I need to replace ribbon cables

ANSWERS:

"Hi,

If the screen turns to black with the audio still on, try shining a torch at an angle close to the screen and check for any images on the screen.

They will be very faint so trying this in a darkened room may help to see them.

If you can detect images then there is a backlight problem.

Either the backlight power supply from the power board or the mainboard.

What is the model number of the TV?"