I have an Onkyo TX-SR674 receiver that has worked perfectly until recently. Its hooked up to my DVR and TV via HDMI. When I turn on the system I get audio almost immediately but no video. It takes usually 10-15 min for the video to appear. I just replaced the HDMI cables to eliminate that and also just did the factory reset each to no avail. Ive also tried changing the A/V Sync setting from the default 40ms all the way to 0ms with no effect although with the 0ms setting it seems to make the video come on faster than before but its still several minutes. Am I missing something here or is my receiver shot? Its about 4 years old.