I have a sony blue ray DVD player and when I connect it via HDMI cables into either HDMI1/DVI or HDMI2, i get the message invalid format. I've tried multiple cables, multiple LG TV's, and the it works everywhere except this TV. I'm at a loss. HELP!

Sounds like everything works. Your remote has an input menu. Have you cycled it around to the right component? i.e. HDMI1 or HDMI2, or DVD, even PC?
If not, try that.

onkyo receivers have a problem, see

http://www.hdtvsupply.com/hdmi-cable-booster.html

there should be a imput button on original remote. just push it then scroll to hdmi2, then enter should give you picture if not they will be an imput option under your menu options

When power on and input set to hdmi1, there is no image appears

If you have more than one HDMI port on your TV,
run one HDMI cable from the DCT6412 to the TV,
and one HDMI cable from the BluRay unit to the TV.
Then, use the "source" (or "input") control on the TV's remote-control to select either 'HDMI1' or 'HDMI2'.

I have had this same issue.

Problem your tv isnt true 1080p meaning it will not work however when you switch to componet cables goto menu then change the display settings to 720p or 1080i then your HDMI connection should work fine.

If you don't have one, the manual is available online: http://static.highspeedbackbone.net/pdf/AVR-488-OM-E_101.pdf

Suggestions:

1. Reset to default values. Per page 36 of manual: 1. Turn off Power. 2. Press Power while simultaneously pressing Speaker A and Speaker B. 3. Once the display starts flashing at intervals of about 1 second, release the two buttons.

2. Make sure you have AM or FM radio reception. This makes sure your speakers, amps, etc are connected and working correctly.

3. Connect DVD player to HDMI 1 in and TV to HDMI Monitor Out.
Play a known good DVD that works when you connected the DVD directly to the TV via HDMI.

Select the DVD/HDP input on the receiver and play the DVD. You should not have to perform any input assignments, etc. It should just work, as HDMI1 is the default system setting for DVD.

4. If possible, obtain a STB with HDMI out & repeat step 3 using the HDMI2 TV/CBL input. Keeping the signal path all digital (HDMI) will give you a better picture quality than forcing several analog to digital conversions (component video is analog).

4A. To use the component connection, first test by connecting the STB directly to the TV via component video/audio if possible. This tests that the component video output of the STB is working correctly.

Next, remove direct connection and connect via receiver. Connect STB to receiver as shown on page 13 in manual. Connect component video output from STB to component video input #2 (tv/cbl) on receiver. Connect the STB audio output to the corresponding tv/cbl audio inputs.

Make sure nothing is connected to the HDMI2 input or to any other TV/CBL inputs (composite video, s-video, digital coax audio).

Now select the TV/CBL input and turn on the STB. You should have both audio & video.

See www.avforums.com/forums/onkyo-owners-forum/696423-faq-setting-up-ps3-onkyo-amp.html

This should give you the info to set up the ps3.

i have sony bravia. i couldn't connect to my ps3 with hdmi cable. but i get only audio. i think it is with the tv settings. can you help

cheak out put on samsung to set it at 720 hdmi out ect might nee dto use red green blue or s video to see menu