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  1. #1


    Member Since
    Dec 16, 2012
    Location
    Central PA
    Posts
    3
    Specs:
    MacBook, iPad 3, iPhone 4s
    MacBook to LG TV
    Hi all:

    I am trying to watch movies on my MacBook on my HDTV. I get video, but no audio.

    I have the appropriate mini DVI to HDMI video adapter and I get beautiful video on my relatively new LG 40" HDTV. I also have the 3.5 mm to RCA cable from the headphone jack to the red/white AV IN on the HDTV directly adjacent to the HDMI on the HDTV. No sound.


    There is nothing in the LG user guide that talks about connecting a computer to the tv. Also, there is nothing on the audio menu on the tv that I can change to make any difference, nor is there anything that I can see in System Preferences > Sound that I can change to make a difference. I THINK I have tried everything. I even tried the other three HDMI ports.

    Is this a OS issue? I am running OS X Lion 10.7.5

    Thanks for any help you can give me.

    Steve G

  2. #2

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,466
    Specs:
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    MacBook model?

    need the TV model #


    And could be awhile - fixin to go see The Hobbit
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  3. #3


    Member Since
    Dec 16, 2012
    Location
    Central PA
    Posts
    3
    Specs:
    MacBook, iPad 3, iPhone 4s
    No problem. Any help, whenever I can get it, would be great.

    MacBook is early 2008 model with Processor = 2.4 GHz Intel Core 2 Duo, running Lion 10.7.5.

    LG tv model is 42LH40-UA

    Hope this helps.

    Thanks so much!

    Steve G

  4. #4

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,466
    Specs:
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    See page 27 of the owner's manual - DVI to HDMI connection - available here.

    You must use those connections.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  5. #5


    Member Since
    Dec 16, 2012
    Location
    Central PA
    Posts
    3
    Specs:
    MacBook, iPad 3, iPhone 4s
    Ok, thanks. I will try a DVI connection. Have a good holiday. If it doesn't work, I will be back S

  6. #6

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,466
    Specs:
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    You will use the same video cable you already have.

    The audio port on the TV is the same as the port on your Mac - stereo 3.5mm ( aka mini-plug) on both ends.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

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