Re: LG 70LB7100 no backlight after 2-5 min

Another note: I disconnected the LED cables from the power supply and powered the TV up. The red LED did not come on. I turned the unit off, reconnected the cables, and powered it up. It acted as before with the red LED blinking.

Re: LG 70LB7100 no backlight after 2-5 min

Hi- I have a 70LB7100 with backlight issues. I received a used unit and it would play for a couple of hours then the backlight would turn off (brightness at 100%). There was still sound and video. If I turned the TV off then back on it would come on and the backlight would turn on for a couple of minutes then off. If I turned the brightness down to 80% the backlight would stay on for much longer.

Sounds like a thermal issue.

Then I removed the back cover of the TV and turned it on. The backlight seemed to...