Question about Onkyo HT-S6300 Theater System

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So I've had my system for a couple of weeks and it worked great. All of the sudden now it starts saying either no signal from the input or it displays some weird colors on the screen in 800x600 resolution. I tried everything and I got it to work again for a little after I jiggled the HDMI cable on the tv out. It worked a little while but then it started again. And I can't seem to fix it. Any ideas?

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  • Josh Pegel Mar 24, 2011

    I'm not sure how to bypass the Onkyo because my TV doesn't appear to have the HDMI out it's a Samsung PN50D550 if that helps with the specs what my setup is. I know it's not the TV because when I hook all of the other things my XBOX, PS3 and Directv up through HDMI to the TV the picture works fine. The "no signal is found on the receiver and what displays on the TV is a blue screen in 720x480p. I looked through the manual and it hasn't been much help. My HDMI connections goes as follows. On receiver HDMI 1 PS3, HDMI 2 not used, HDMI 3 DirecTv, HDMI4 Xbox 360. They all directly from the source to the receiver. Then I use the HDMI out from the receiver to my television. The receiver is able to send out images like the setup menus to the tv. Thank you so much for your help so far. How would I bypass sending the video to the receiver? I would love to know how to do that but not sacrifice 7.1 because I was told that optical only does 5.1. I mean ideally I would like the receiver to do both. Thanks for the help please let me know what you think.

  • Josh Pegel Mar 24, 2011

    I also forgot to mention that none of the HDMI inputs appear to work.

  • Josh Pegel Mar 24, 2011

    It appears that the HDMI inputs are what the issue is. So I'm going to contact the retailer I got it from to get another one thanks for the help



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If you jiggle the HDMI cable and it gets better that suggest you have bad cables or connections. Take the next step and replace the cable.

Posted on Mar 24, 2011

  • Josh Pegel Mar 24, 2011

    Thanks for the quick reply. I switched out all of the cables and pretty much nothing happens so I should pretty much assume that the HDMI went bad. Or could it be a sound issue because I still don't get any sound out of it either. I also do keep on getting an 800x600 resolution which does not make much sense.

  • David Dunn
    David Dunn Mar 24, 2011

    The unnamed input is always a potential cause for failure. Check IT out. You COULD bypass the Onkyo to prove it's working as expected. In fact, if it was mine, I wouldn't even have good video coming into it at all, as the TV is the ultimate and primary user of video.

    "No signal". What device says that and is it verbatim? I'm thinking we're dealing with a display/TV issue.

    Have you perused the Onkyo manual?

    Register and download the manual for free at

    I need to know some details (point-to-point) of the HDMI connections.



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