Purchased an LG 47LV5500 a little over 2 weeks ago from Best Buy. They installed it and hooked the HDMI output from cable box to TV. When powering on TV, most of the time there is a delay and then the video appears with no sound. If you power off/on about 5-20 times, you'll finally get audio. They said it was cable box. Had cable box replaced - same problem. Had BB bring out another brand new TV - same problem. Tried swapping HDMI cables, all the HDMI inputs, made sure all devices had latest software update. Cable company verified all cable box settings ok. Same problem. Now I want to return TV for a different brand and Best Buy is trying to find any excuse to tell me it's not the TV. I expect the HDMI to work on a brand new $1000 TV. I have another LG TV and it works absolutely fine with same cable box and cable. I know there are other connections I can make but I want the hdmi/cable box to work. (It does work from laptop).
BB is having another cable company guy come out tomorrow night to verify all the settings again. I'm pretty sure it's something in the firmware handshake between the 2 devices and replacing hardware at this point seems useless.
Does anyone else have any suggestions as to what I could possibly change that I might have overlooked? LG wants to send out a guy to replace the main board in the tv but even that guy (sub contractor) says it's ridiculous to replace the board on a brand new tv when both brand new tvs I've tried exhibit the same problem.
I agree with Best Buy - it might not be the tv itself and I agree with the cable guys - it might not be the cable box itself. But should I have to turn my tv on/off 5-10 times to get sound?