51F510 Input settings for HDMI

Ive never heard of a set having 7 HDMI inputs...go to HDMI 1 and use that for your Roku device and all should work fine, nothing to adjust or set other than select the HDMI one input

may i know the model and maker of the device you want to use a HDMI cable

Page 18 of the manual, you shouldn't need to do steps 2 or 3.

CONNECTING A COMPONENT SOURCE WITH HDMI or DVI CAPABILITY TO INPUT 1 or INPUT 2
1.Connect the HDMI or DVI to HDMI connection cable from the output of the HDTV set top box or DVD player to the HDMI input as shown on the AVC Center below.
2.With DVI output, connect the cable from the AUDIO OUT R of the HDTV set top box or DVD player to the INPUT (AUDIO/R) jack.
3.With DVI output, connect the cable from the AUDIO OUT L of the HDTV set top box or DVD player to the INPUT (AUDIO/L) jack.
4.Press the INPUTS button, then select INPUTS 1 or 2 to view the program from the HDTV set top box or DVD player. The VIDEO OSD label disappears automatically after approximately four seconds.
5.Select ANT A or B from the INPUTS menu to return to the previous channel.
NOTES:1. Completely insert the connection cord plugs when connecting to rear panel jacks. The picture and sound that is played back will be abnormal if the connection is loose.
2. The HDMI input on INPUT 1 or 2 contains the copy protection system called High-bandwidth Digital Content Protection (HDCP). HDCP is a cryptographic system that encrypts video signals when using HDMI connections to prevent ******* copying of video contents.
3.HDMI is not a "NETWORK" technology. It establishes a one-way point-to-point connection for delivery of uncompressed video to a display.
4.The connected digital output device controls the HDMI interface so proper set-up of device user settings determines final video appearance.


http://tv.manualsonline.com/manuals/mfg/hitachi/lcd_television_lcd_display_monitor_32hdl51.html?p=18

newer tvs need to know that HDMI is attached to give you signal also need to turn on device from where HDMI signal comes from.post the model of your tv ,or if universal remote has input try this,1.- connect hdmi ,2.- turn on device(dvd,ps3,blue ray, etc.) 3.- press input on remote ,or go to menu manually on tv and find input.hope it works.

If you see a no signal message, then it means that the signal output format of the PS3 does not match . It happens if you have previous used it on another tv and now connected it to a different tv. To resolve this, turn off the PS3 . Press and hold the power button on the PS3 till you hear three BEEPS. The PS3 should automatically detect the tv's resolution and the initial setup screen should appear. After that you should just follow on-screen instructions to set it up.

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.)

If your TV has an HDMI input, hook up the PS3 w/an HDMI cable to the TV. This will give you a high def picture (set up the PS3 to output the max resolution your TV displays). That will take care of the video side.

Next hook up an optical cable from the PS3 to the receiver. In the PS3 menu, you have to change the audio settings to output the sound via the optical cable.

Finally to get sound out of the receiver to the speakers, you have to setup the receiver source input. For example if you setup the PS3 to play thru "VCR" input, then you have to make sure the VCR input is setup to use either optical 1 or optical 2 for sound (whichever one you have the optical cable plugged in from the PS3).

• I found this solution on a different site... it worked for me. I needed to change the sound settings in my ps3 to optical... then i selected dolby 5.1.... that took care of my sound.
  

the r04u comes factory with hdmi DISABLED, hook up your hdmi device, and turn r04u to the hdmi  input (input 1 or input 3)  then:
To activate the HDMI terminal: 
1 Press HOME MENU. 
2 Press /  to select “Option”, and then press 
ENTER. 
3 Press /  to select “HDMI Input”, and then press 
ENTER. 
4 Press /  to select “Setting”, and then press 
ENTER. 
5 Press /  to select “Enable”, and then press 
ENTER.


there you go

I am not sure if you have gone into the Receivers Menu or not? If you have NOT! Then please try this: Go into the Receivers Menu (If you do not see the MENU on the TV you can hook up a Composite (Yellow) Cable from the Receivers Monitor Out (Yellow) and select the Input on the TV that you plug into) Look in the Menu for Inputs or In/Out Config. or Video Setup. Look for the Input that you are using for that Device. Change the Video setting to HDMI. I also recommend doing this for you Audio as well. Find the Audio Inputs and MATCH each Input to there DEVICE and CABLE (Connection) Being used. Also check in the Receiver Menu for UPSCALE or UPSCALER. Turn this on or off to see if your TV is Compatible! Hope This Helps! P.S. Check the Manual for Upscaling Capabilities NOT all Receivers upscale and route the SAME!

On your TV set remote are you selecting the proper input; for example when you have different devices connected to the back of your tv set, dvd player, vcr, cable box etc; you have to tell the tv which device you want to use by selecting the right one on your tv remove input selection. Hope this was any help.