Unplug all HDMI connections, remove power and wait 10 minutes. Then apply power and one HDMI source and retest. if it fails try the email at http://www.lg.com/pl/telewizory/lg-42LN570S
So yesterday night while I was watching TV my LG TV has just turned off all of the suddenly. Then it kept turning on until the LG logo and then it would turn off while the red LED kept blinking all of the time!
The TV in question is LG 42LN570S.
If anybody has any idea, clue or advice, thanks in advance. I am also uploading a YouTube video with the thing in question!