Josh, you can test this with any HDMI cable you have around the house. It doesn't have to be a very short cable just to test things out. They are standard connectors inside the receiver. If this fixes your problem you can order a short little 6-12" HDMI cable from anyplace online and just swap that in. Just try and avoid a cable that has a thick cable cover as part of the cable may have to lay into slots in the electronic boards in the receiver, and they can be a tight fit.