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Connected HDTV to PC - NO SOUND AT ALL

  1. #1



    Debbie B
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    Connected HDTV to PC - NO SOUND AT ALL

    Hi everyone,

    Please could you help. I have a Hitachi 26" HDTV that I have connected to my PC via a HDMI - DVI cable + stereo jack. The picture is fantastic bit I have no sound at all. I have connected up using RGB cable, sound is fine. I have asked around and apart from people trying to sell me extra cables costing 40-50 I have not had much luck. I think I have 2 motherboard (sorry not very tech minded) one is M3A motherboard and the other is K10N78hSLI-GLAN. I have checked all setting etc, volume on all is up. I have Realtek High Definition Audio.

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  3. #2
    MrNeeds's Avatar

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    Re: Connected HDTV to PC - NO SOUND AT ALL

    Quote Originally Posted by mooney1999 View Post
    Hi everyone,

    Please could you help. I have a Hitachi 26" HDTV that I have connected to my PC via a HDMI - DVI cable + stereo jack. The picture is fantastic bit I have no sound at all. I have connected up using RGB cable, sound is fine. I have asked around and apart from people trying to sell me extra cables costing 40-50 I have not had much luck. I think I have 2 motherboard (sorry not very tech minded) one is M3A motherboard and the other is K10N78hSLI-GLAN. I have checked all setting etc, volume on all is up. I have Realtek High Definition Audio.
    ok just a run down of what you have done, connected your tv to your pc via DVI to HDMi adaptor and audio is connected via stereo jack, is there a function on your television that can have 2 audio sources from different inputs, if not, you can get audio through your HDMi input by connecting the SP/DIF to the graphics card,
    ive included a snapshot of your motherboards user manual information on HDMi SPDIF connection. i have also included the PDF document for your motherboard.

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    Re: Connected HDTV to PC - NO SOUND AT ALL

    MrNeeds,

    I don't have 2 audio sources from different inputs on the tv, I think the TV automatically chooses audio for each channelie:HDMI ,RGB(Component) and Digital TV. I presumed that the PC did the same when the DVI cable was connected. The little speaker sign bottom right of screen says it is Realtek HD audio. Do you know if I have to open up the pc and have a fiddle?

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    Re: Connected HDTV to PC - NO SOUND AT ALL

    Quote Originally Posted by mooney1999 View Post
    Hi everyone,

    Please could you help. I have a Hitachi 26" HDTV that I have connected to my PC via a HDMI - DVI cable + stereo jack. The picture is fantastic bit I have no sound at all. I have connected up using RGB cable, sound is fine. I have asked around and apart from people trying to sell me extra cables costing 40-50 I have not had much luck. I think I have 2 motherboard (sorry not very tech minded) one is M3A motherboard and the other is K10N78hSLI-GLAN. I have checked all setting etc, volume on all is up. I have Realtek High Definition Audio.

    some hd outputs do not support sound you have to plug a diffrent speaker in like speakers into head phone socket

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    Debbie B
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    Re: Connected HDTV to PC - NO SOUND AT ALL

    I've tried plugging external speakers in everywhere but still I can't get any sound. I do get the welcome sound through the TV when I turn on the PC but thats about it. I am wondering if this problem is because I have a 9800GT as quite a few people are having the same problem.

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  7. #6
    stormy13's Avatar

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    Re: Connected HDTV to PC - NO SOUND AT ALL

    Quote Originally Posted by mooney1999 View Post
    Do you know if I have to open up the pc and have a fiddle?
    Yes it does. You need a cable just like the one MrNeeds pictured, and it needs to connect to the SPDIF connector on both the video card and on the motherboard. No cable, no sound over HDMI.

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  8. #7



    Debbie B
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    Re: Connected HDTV to PC - NO SOUND AT ALL

    Today I contacted the company that built my pc and they said they would send me the cable in question. Once I receive it and fit it (with some help hopefully) I will post back and let you all know how it went. Thanks for all your help.

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    Re: Connected HDTV to PC - NO SOUND AT ALL

    It is a pretty easy and straight forward thing to connect. Just locate the SPDIF header on the motherboard (check the manual if unsure) and the one on the card, connect the cable, and when you want to use the HDMI connection set it as the default playback device in the Vista audio settings.

    P.S. Just in case, have the computer turned off before opening it up.

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  10. #9



    Debbie B
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    Re: Connected HDTV to PC - NO SOUND AT ALL

    I still can't fathom why I can get the windows welcome sound but nothing else. Is there a way I can just get sound without having to attach the cable?

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  11. #10
    MrNeeds's Avatar

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    Re: Connected HDTV to PC - NO SOUND AT ALL

    Quote Originally Posted by mooney1999 View Post
    I still can't fathom why I can get the windows welcome sound but nothing else. Is there a way I can just get sound without having to attach the cable?
    have you set HDMi as the default sound device?
    and just for future reference, yes you need the cable connected otherwise you get no sound over HDMi as stormy13 has said before.

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