LG 55LX6500 will not respond to the remote. I have unplugged it and tried again. It flashes on the screen "This function not supported now". Last time it was used was 2 days ago and it was on HDMI 2 watching a DVD.

SOURCE: LG 37LC7D remote doesn't work

Turns out there is a problem with certain LG models made in Mexico during May. Not only did the remote stop working, but the TV started shutting itself on and off randomly. Took it back and exchanged it for a Panasonic. Not putting up with that, LG.

SOURCE: LG 42 LCD no sound or picture

This is probably bad capacitors on the power supply board. My LG 42LB1DR has a known problem with this and I replaced the four bac capacitors myself and saved 5-6 hundered dollars that I was also told that it would cost to fix. I fixed for under 10 dollars and about 20 minutes. LG knows about it but they dont really want to admit it. My TV was only 26 months old when this happened. The four capacitors are made by Samxon and are 2200uf @ 10v. They are junk so even if you have the entire board replaced for say $200 its just going to happen again. They need to be replaced with a different brand.

SOURCE: LG 42PX4DV - HDMI Audio / PC Audio IN problem

one quick fix you can try. plug in the HDMI cable, slect a digital audio sound output from the sound settings on your machine, then leave it connected and restart it. It just might work.

SOURCE: DVI warnings when you connect HDMI cables

TV IS IN DEMO MODE GO IN OPTIONS MENU OF VIDEO AND TURN OFF. READ OWNERS MANUAL PAGE 80,81,82

SOURCE: No picture or response - LG LCD TV

Hi, I have the exact same problem. I was wondering if you could tell me how you fixed it? Mine is only 2 hours old from the box