Xbox not putting audio or video through tv... I use and HDMI cord...

What kind of receiver? Do you have anything else like DVD player going thru receiver? My receiver has 3 hdmi in and 1 out (to tv) so all those equipment would just go to "hdmi" on tv.
Another way to do it is put your tv on exterior audio... for all sound to go thru your receiver.

Hook your X Box into the Receiver HDMI input with your HDMI cable and another HDMI cable from the HDMI out on the receiver to the HDMI input on your TV.

Did you try your xbox on another tv, what about other inputs on the tv...

Hi,
If your xbox has HDMI connector then you HDMI cable to connect it to the receiver and another HDMI cable to connect receiver to the TV. Receiver should support both video and audio over HDMI.
If your xbox doesn't have HDMI, connect the video directly to your TV using whatever connector/cable is available (in terms of quality from best to worst: HDMI, component, s-video/scart, composite).
Then connect audio to the receiver via optical spdif cable.

You need to Bypass the Receivers HDMI port and use HDMI directly to the TV. Your receiver has HDMI version 1.2a and is not 100% effective. Use the optical out from your Xbox to the receiver and all will be well. 1.2a has issues in every receiver on the market. Supposedly 1.3b on the "new" receivers has fixed this issue. Hope this helps

You may need to go into your TV settings and turn on HDMI Audio. If this is not enabled (Typically on HDMI 1) The TV will not ask the 360 for Audio and as such won't pull it.

You will need an additional HDMI cord...you can get them without getting ripped off by purchasing at bluejeanscable.com.

Connect your HDMI out from the xbox to the receiver. Connect the additional HDMI cable to the "out" HDMI connection on the receiver and connect the other end of it to your TV.

1. Connect your set-top box HDMI output to the Xbox One HDMI input.
2. Connect the Xbox One HDMI output to your A/V HDMI input.
3. Connect your A/V HDMI output to the HDMI input on your TV.
4. Notes
   
5. This option requires that all devices support audio over HDMI.
6. Surround sound from your set-top box will not be passed through the Xbox One.
7. When you perform this kind of basic setup with an A/V receiver, you're passing both audio and video through another device. Depending on your equipment, there's a small risk of audio or video lag.
8. Connect your set-top box HDMI output to the Xbox One HDMI input.
9. Connect the Xbox One HDMI output to the HDMI input on your TV.
10. Connect the audio output from the TV to the audio input on the sound bar using either HDMI or optical S/PDIF cables.

There are a couple of options you can use.

Are your DVD and cable actually going to the Onkyo first and then to the TV? I am assuming it is, if you listen to the Onkyo when watching a DVD or cable.

The Onkyo receiver you have has 2 hdmi inputs and 1 hdmi output.

Does your Xbox360 have an hdmi output and that is what you want to connect to the Onkyo? Some do and some don't.

If your Xbox has a hdmi output and you are already using the 2 hdmi inputs on the Onkyo, you can not connect the Xbox using the hdmi, you have no more hdmi to connect to, so you must go thru one of the other inputs of the Onkyo.

The hdmi has the video and audio together, the other video options do not. you would need to run seperate audio cables as well.
Your Xbox should have a composite video (yellow RCA jack) output or a component video (1 red, 1 blue, 1 green RCA jack) output.

When you connect the Xbox thru, lets say the composite video of the Onkyo , you will also need to connect the audio from the Xbox to the Onkyo on the same input. It should be right next to the yellow RCA jack or right under it. They are 2 RCA jacks, one red and one white.

You will then need to connect the composite output of the Onkyo to the composite input of the TV.

When connecting like this, you will also need to select the composite input on your TV with your remote for your TV. Your TV should have an input button that lets you go thru all the different inputs to it.

you can also use the component video from the Xbox if it has that. But you must also run the audio to the Onkyo as well to the corresponding audio inputs of the component video input on the Onkyo.

This may sound a little confusing, but remember that the hdmi has the audio and video in one cable, the other video options do not, so you must run additional cables for the audio to the Onkyo from the Xbox.

Also remember whichever video you use from the Xbox to the Onkyo, you must also run that same video from the Onkyo to the TV and then switch the TV over to that input when you want to watch the Xbox on the TV

My xbox 360 elite video port went out on my previous xbox, and on the one i just got. it could be your video port on your xbox or it could be the your tv. Hdmi cords usually dont go out so i dont think it could be that. A way to check if its you xbox would be to try the regular cords that you get with your xbox on the same tv and see if it works. If it doesnt, try the same thing on a different tv. if it doesnt work on that tv either then its your xbox. if it does work, then it must be the other tv.