I just recently picked up an LG 42LB5D Television and I LOVE IT!!!!! I recently purchased my first home and this was quite the housewarming gift to myself.
I was able to attach it to my digital cable box and get a great picture and a great DD 5.1 signal to my audio receiver. This is all through the HDMI cable and the digital coaxial audio out cable from the TV. (I have the TV speakers set to "Off"). It's nice because when watching an HD feed that has a 5.1 signal it outputs the signal to the audio system, while it outputs a normal 2.0 signal for regular TV broadcasts.
Where I am having a problem, however, is passing through a DTS signal. I saw many people ask this question here in this thread, but nobody seemed to have gotten a response. Basically, if I have my Pioneer DV400 DVD player connected to the TV via the HDMI cable, the TV refuses to pass through any DTS signal. It is automatically being downconverted to a crappy PCM signal. I know that the TV can pass through a Dolby Digital signal because it does that all the time with my digital cable box and the signal is a discrete 5.1 channels. With the DVD player, however, it just can't seem to output the DTS signal. Is this a fault of the TV that it is not able to simply pass through the pure digital signal from the HDMI feed?
I can avoid this problem by connecting the DVD Player to the audio system using a digital coax cable and telling the player to not pass audio through HDMI, but I'd like to reduce this down to just the HDMI cable so that I don't have to change the input on my audio receiver every time I want to watch a movie. (The home theater system is a fairly inexpensive Midiland S4 8200 v. 2.0 system that I used to use for my computer, but since I needed to cut some costs I decided to use it as my home theater setup since it decodes DTS and DD while connecting with regular speaker cable).
Oh yeah, I LOVE MY TV!!!!!!!