Just bought a 55" Lg Led tv and i hook up hdmi from cable box to tv hdmi 1 and hdmi from my blue ray player to the tv hdmi 2, ok then i turn the input on both now hdmi 2 work but hdmi 1 has no signal why is that?

If your Sony Blu-Ray player and LG TV are recent models, each should have an HDMI cable connection. HDMI is an method to connect your digital video and audio devices with just a single combined cable. In the case of your LG TV, using an HDMI cable will allow you to send the HD video signal to your TV's screen, and allow you to hear the sound through the TV's speakers.
Your LG TV may have multiple HDMI connectors, to allow other devices to send signals to your TV, such as a cable box or satellite box or digital video recorder (DVR). Your Sony Blu-Ray player will usually have just a single HDMI connector.
Purchase an HDMI cable from your local electronics store. There are different versions of the HDMI specification, and you should get a cable that you can verify is certified for the HDMI version 1.4 specification.
Plug one end of the HDMI cable into the Blu-Ray player, and the other end into one of the HDMI connectors on the TV, noting which one you selected.
When you turn on your Sony Blu-Ray and your LG TV, you should use the remote for the LG TV to select the input source. Your LG remote should allow you to select the HDMI input connector you used, at which point you should see the display of a DVD playing on the Blu-Ray player. If you cannot hear the sound, use the LG remote to increase the TV volume.

The choice is entirely arbitrary. You may connect any accessory to any HDMI input. I recommend you connect the device you use most (probably your direct TV box) to HDMI 1, your second most frequently used device to HDMI 2, and so on, but it's really a question of your own preferences.

Hello,

Please indicate the brand and model of your receiver, BD player and your speakers. Basically, you just need to connect the cable box and blue ray player to the receiver. The 5.1 speakers should be connected to the blue ray player, then another set of cables from your BD player to your TV. When you want to use the speakers while watching TV, you need to turn on the blue ray player too.

ideally you would simply add an hdmi source from each device to the surround receiver and send the output to the tv but im thinking your amp may be short on inputs from all devices and if indeed it was this simple you wouldnt be here seeking this info also note you may be able to use the output on the set to gain another signal tranfer but note there can be compatability issues on some sets whether they will decode hdmi in and rca out or optical out like i said some sets ok :) i wish you luck and wishin i had this all in front of me so i could be a greater help any q's drop me a comment here ok :)

LG documentation states:

When you use SIMPLINK function, you have to

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.)

your reciever does not have hdmi, so the audio is not going to be true DD+ or DTS for broadcast tv.

if your dvd/blue ray player has digital optical spdif, this can be used to transfer the encoded DD+/DTS digital audio.

the besat way to run your tv audio through the reciever is to hook up the dvd/blue ray player up with (perferrably) digital optical spdif, composite spdif or (least favorably) through the stereo stereo analog inputs on the reciever for "dvd" audio in and hook the video from the dvd/blue ray up to the corresponding "dvd" video component input on the reciever.

this way is only going to get your dvd/blue ray sound, next you need to hook up your cable box to the reciever so that you can get broadcast tv sound. hook up the cable box audio to the "tv" stereo analog audio ins, and hook the video to the corresponding "tv" video component inputs.

the component video inputs have separate jacks for red, green and blue ( labeled "Y" "Pb" and "Pr") and are capable of carrying a 1080p full hd signal. use the component video outputs on the reciever to output the video signal to a component video input on the tv, using the receiver's input selector to change the video source.

Easy solution; this is a very common problem. Connect Cable or satellite box / DVR directly to one of the TV HDMI inputs. Connect an optical audio cable from that box to receiver so sound is surround through your speakers. You cannot connect DVR directly to receiver because the anti pirating chip will shut off the picture and produce a green or no screen at all.
You can, however, connect a BD (Blu-Ray) player via HDMI cable directly to your receiver without that problem. Connect HDMI output from receiver to a second HDMI input on the LG.
Contact me if you need more help! All the best, John

I have the same problem.  It only occurs with my HD DVR (HDMI cable), not my blue ray (HDMI cable), or my xbox and wii (component video).  Video and audio cutout is random and drives the family nuts.  I am desperate for a solution.

Depending on if your surround system has a hdmi input or not. if it does you can connect the blu-ray player to it. If it doesn't have an hdmi input you will have to run the hdmi cable from the blu-ray to the tv then run a set of rca cables (red and white plugs) from the tv audio out to the surround systems' audio input jacks to get sound through the surround system. Most surround systems don't have an auxiliary input for another video device.

The problem is the main board in your TV. If your TV is a LG or SONY brand, please try this:

Re-Flow Soldering Procedure for LG Main Board

1.Pre-heat your kitchen oven to 385 degree (No more than 400 degree);

2.Put the main board on a card board (like a pizza box board) in the oven;

3.Heat it for 10 minutes (No more than 10 minutes);

4.Turn the oven off & leave the door open, at this moment, do not touch or move the board until it colds down to the room temperature.

5.Install the board in the TV & try it out.