Summary: We bought the LG in 2011 as the secondary TV. It was wall-mounted and everything worked well. Since it's a secondary TV, we only used it a few hours every other week. Unfortunately, it broke down a few days ago for no particular reason.
Google: 'LG TV Sound, No Picture' Before Buying This TV
5 March 2012
Summary: After reading all the gushing reviews here on Amazon and other online sources, we purchased a 55' LG5600 in late November, 2011. It stopped working March 5, 2012 (that's 3 months, if you're counting). One night it worked fine, by the next morning we could get sound, but no picture.