Thank you CGGorman for your post. I saw a similar solution on another forum. I have an LG 55LX6500 which had the same problems. I have Time Warner cable connected by HDMI to an Onkyo 5.1 surround sound receiver, then to the LG flat screen. After turning them all on, the TV worked fine for a while, then all buttons would light up on the TV and I was unable to use any TV functions - volume, input, power, etc. Sometimes the volume would increase to the maximum on its own. I was unable to turn off the TV even after turning off the Cable and Receiver, and was forced to unplug it. After plugging it back in it turned on by itself. Leaving the other units off, I selected the Simplink button which showed the option "On" - I switched this to "Off" and turned off the TV. Turning everything back on, the TV now works and I have not had the problem recur. I'm still monitoring it as I did this only last night, but so far no issues.