Losing sound when connect a dvi to hdmi cable to lcd tv

Discussion in 'PC Hardware' started by fibola, Dec 10, 2012.

  1. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    #1 fibola, Dec 10, 2012
    Last edited: Dec 10, 2012
    hi,
    im tring to connect a pc to my 42lcd tv in the livingroom.
    for video i use a dvi to hdmi
    and for audio i use a regular cable that connect the audio exit from the sound and the similar exit in the tv.
    now the problem that whenever the 2 cable is connected togheter i lose the sound while video is on.
    when only sound cable is connected i have sound.
    when only the video cable is connected i have video .

    any ideas why i lose the sound when both cable are connected....
     
  2. redroad

    redroad MDL Guru

    Dec 2, 2011
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    edit your post and make the color darker
     
  3. msr

    msr MDL Senior Member

    Dec 27, 2007
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    When you have audio plugged in only to tv, is it still on hdmi same as before?

    I am not sure you will be able to do it that way you want.

    Does your computer not have hdmi out on back?
     
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  4. blueis300

    blueis300 MDL Novice

    Aug 12, 2009
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    So something like this?

    HDMI is capable of carrying both audio and video signals from the video card to the LCD monitor. The following conditions apply.

    1. It must be connected to the HDMI port in both video card and LCD monitor (or HDTV).

    2. If using an AMD Radeon HD video card, the sound driver for the video card must be installed.

    3. nVidia video cards have no sound driver because they does not have audio processing units built in. A pass-thru cable must be connected from your sound card or onboard audio to the nVidia card for the sound to be transmitted thru HDMI.

    4. Using a VGA or DVI to HDMI adaptor will not transmit the audio because VGA and DVI only transmit video signals.

    5. If the LCD does not have a HDMI port, then it cannot recieve the audio signal from the HDMI cable.

    6. The LCD monitor must have internal speakers or speakers attached to the monitor to hear audio.
     
  5. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    #5 LatinMcG, Dec 10, 2012
    Last edited: Dec 12, 2012
    i corrected some of the replies see in color above.

    heres something to remedy that dvi to hdmi no audio.
    Monoprice DVI & S/PDIF Digital Coax/Optical Toslink Audio to HDMI Converter
    the right side is input.. it uses SPDIF coax or optical to "inject" to the hdmi cable on left side out.

    BINGO = the HDMI on TV is expecting audio that is not there.. and it cant use other audio inputs on tv while hdmi is the one used ?

    easy n cheap solution :
    1: if u have a stereo system: use an audio mini jack to rca red/white plugs to it (cheap at most electronics stores)
    2: use a pc speaker system in the pc since its already playing the video.. like a surround sound sys.

    Not so cheap
    1: buy a video card with hdmi = $30 or so but weak.
    2: buy a SPDIF to HDMI box about $40 or more.
     
  6. blueis300

    blueis300 MDL Novice

    Aug 12, 2009
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    Yeah I was just trying to come up with a general. As bigdOg posted on the other site maybe go into the tv settings and check the hdmi settings.
     
  7. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    thats what i have.
    but i couldnt find any audio driver for that.
    is it driver for the video card or for the audio card?
     
  8. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    is it DVI or HDMI ????'

    DVI = no audio chip
    HDMI= yes audio chip.
     
  9. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    have both cable and tried them both
    the describtion in the first post that when each cable is plugged by itself i have audio or sound is for the dvi cable.
    the hdmi cable give me video only - no sound.
     
  10. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    #10 LatinMcG, Dec 14, 2012
    Last edited: Dec 14, 2012
    wow . totaly wrong
    HDMI does carry audio BUT YOUR VIDEO CARD PORT U USING IS ?
     
  11. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    :wacko:
    was i that un-understood ?
    when im using the hdmi to hdmi cable i use only that cable.
    i never use both cable at the same time.
    when i using the hdmi to hdmi cable i use the hdmi exit that on the video card - to the hdmi enter in the tv.
     
  12. LatinMcG

    LatinMcG Bios Borker

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    #12 LatinMcG, Dec 14, 2012
    Last edited: Dec 14, 2012
    ok so videocard is hdmi and using hdmi cable.. no adapter from DVI to hdmi as sound does not come from dvi. (unles its nvidia pre 2010 with no HDMI. SPDIF jumper cable used from onboard soundcard)

    windows 7 ... right click the speaker. playback devices.. check there for output to be HDMI audio not internal soundcard.

    what video card model ?

    missunderstood because of title
    Losing sound when connect a dvi to hdmi cable to lcd tv
     
  13. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    hi,
    so ill try to make it simple.
    i now working with hdmi to hdmi cable but still dont have sound .
    although the sound bar seems to working i cant hear nothing.
    i added some relevent pictures that may assist to findout the issue.

    4.JPG תמונה 1.JPG 2.JPG 3.JPG

    p.s
    as i open the case (for the second time) i notice there is a spdif adapter on the video card , as i guess thats why the dvi to hdmi cable didnt work , but i dont understand why the hdmi to hdmi cable doesnt work.
     
  14. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    unknown device is likely the audio chip on the video card.. open that and see what details , HARDWARE id is so we can find and install driver.
     
  15. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    here is the video card :
    a.jpg b.jpg


    one pic with the model
    one pic with the spdif plug
     
  16. LatinMcG

    LatinMcG Bios Borker

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    #16 LatinMcG, Dec 17, 2012
    Last edited: Dec 18, 2012
    Palit GeForce 8400GS 256MB 64bit DDR2 DVI HDMI PCI-E (567/350) (NE28400SHHD26)
    uses SPDIF jumper cable to mobo no audio chip on the video card.
    enable SPDIF digital on sound controls for mobo audio. what motherboard is it ?
     
  17. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    thank you very much latinMcG , you were very helpfull, and your paitiant is admirable
     
  18. fibola

    fibola MDL Junior Member

    Aug 20, 2011
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    #18 fibola, Dec 18, 2012
    Last edited: Dec 18, 2012
    (OP)
    Hi again ,
    Sorry for buging again with this matter , but i have difficult with the s/pdif cable.
    I was able to find a spdif cable but couldnt get sound.

    I tried to connect the spdif cable to the motherboard pins, but no sound , were heard .
    Later when i will be next to pc i will circule on the motherboard picture a circule around the two pins...

    Cant put this issue behind...rrrrr


    here is a picture as promised .
    notice the written spdif out (twice) and the 4 pins that is a little to the right (hope thats the ones- big embarrassing if not)

    mobo.jpg

    maybe there is specific way to plug them . the cable side that goes to the motherboard has 2 connection - 1 red and 1 black)