All you are currently doing is getting sound OUT from the LG HT system. If you want sound from your cable or satellite, you have to run a seperate audio cable into the back of the LG system. If you are running a cable line straight into the TV you need to run an audio cable OUT of the TV so you get sound via the LG system.
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You should have the HDMI plugged into the Home theater unit. The theater unit then is attached to the TV using the HDMI out.
The home theater unit passes the HDMI through to the TV while playing the audio for you.
You will likely need to select the correct source on your RT2910.
Here is a link to the manual.
See the section entitled "Connecting to HDMI Components" for an illustration of what I have described above.
connect to the OPTICAL IN 1 jack to enjoy TV
sound to your speaker system.
Basically you need to have the Audio go from TV to receiver and setup receiver to that Input to output surround sound to all speakers.
If you have a cable box or satellite receiver, hook that output into the receivers input and that should work.
My setup is DirectTv HDMI output goes into the LG Home Theater HDMI Input 1, and LG goes HDMI output into the TV HDMI input 1.
so to watch DirectTV, I switch LG Home theater to HDMI Input 1. and TV is on HDMI input 1 (to view LG HDMI output from DriectTV, Blu-Ray, Vudu, etc.)
as far as hooking up your blu ray player to the sc-pt660, the only real way to utilize the surround sound (with true surround sound) is through the optical audio out. You need to connect your blu ray player through hdmi to your tv and then connect your blu ray player to your surround sound using the optical audio out/in. I, personally have the sc-pt660 hooked up through component cables so I don't waste an HDMI input on my TV. Except for cd's, there is no reason for you to use the actual dvd player part of the surround sound considering you have a blu ray player. In conclusion, hooking your blu ray player and the sc-pt660 up to get better video simply isnt possible (your blu ray player alone gives the best possible resolution, 1080p). As far as audio goes, run an optical audio cable from your blu ray player to your sc-pt660 to get true surround sound.
Hi...the HT-R800 Home Theater system has the HT-R550 receiver which could only carry Video via HDMI. you would need to connect a separate audio cale(Optical Audio Cable) to be able to get audio out of the PS3 to the receiver. Once you have hooked up an Optical Audio Cable you would need to go in the PS3 setup and putin Bitstream and Optical in the Audio Setup menu.
Run a regular RCA type audio cable from your TV audio out to your Home Theatre audio in. That is what I have done recently with my Samsung LCD and Home Theater. You then have to put your Home Theater on Aux 1 or Aux 2 to get the sound from TV. Ensure your TV's volume is off.