i have my blu ray and HD cable box running through my A/V receiver into my TV (all using HDMI connections). One day after 2 weeks of working fine, the receiver stopped sending signal to the hdmi port on my TV (I then tested, and it wouldn't work on ANY of my 3 hdmi inputs on my TV (LG 55lm4600). I then tested my blu ray and my Verizon Fios cable box directly. My cable box would work, buy my Sony blu ray player would not- so I determined that there must be some sort of setting on the hdmi inputs on my LG tv- but I couldn't find it anywhere. I ultimately solved my issue by setting my TV back to factory default settings, but I still have no idea what changed. Is there an HDMI port configuration on a typical LG TV? Anyone know what setting would have caused this? Thanks for the help.