Question about RCA L32HD31 32 in. LCD HDTV

1 Answer

I have a RCA L32HD31YX12. I have had the tv for a little over a year, and now there is no sound. The tv comes on and everything seems to work properly, but no sound is coming from the tv...at all. What could be the problem? Thanks!

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  • 4 more comments 
  • weslee_masse Oct 09, 2010

    Hello, Thanks for commenting!

    This may sound dumb, but I am not real sure what an AV receiver is... sorry.

    I do have sound, but it is from my surround sound, not from the tv. The tv has an output for headphones. So, I bought one of those RCA(White/Red) to headphone jack cables. Then I plug in the red/white end into the surround sound. This works good, but I would like to have sound coming from my tv again.

  • weslee_masse Oct 09, 2010

    Also, I have a satellite receiver, and a xbox 360 plugged in to the tv....and no sound is made from the either....

  • weslee_masse Oct 09, 2010

    It is a dish satellite receiver. It is connected to the tv through the audio/video input using the red/white/yellow cable

  • weslee_masse Oct 09, 2010

    I looked at the manual, and my menu does not look exactly like that, but it is close. It doesn't have the equalizer, and it doesn't say surround it say SRS. However, the SRS was already set to Off.

  • weslee_masse Oct 09, 2010

    I personally think there is something wrong with the speakers or something. I think this because even with nothing plugged in except a regular antenna (to watch local channels) no sound comes out. (I unplugged everything today and plugged in an antenna just to see if that did anything) I have played around with the sound setting, but nothing seems to work.

  • weslee_masse Oct 09, 2010

    Well, I opened up the tv today, but I did not know what I was looking for so I closed it back up. I am currently watching it (sound through my surround sound). How much would a main board be?

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1 Answer

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  • RCA Master
  • 5,807 Answers

Thanks in advance for choosing Fixya for assistance.

I would like to make a clarification request , before I present my possible solution to

your problem,


Does it happen on all TV inputs ? or just on the tuner?


Have you tried connecting the TV audio out to your AV Receiver or similar just

for initial troubleshooting?


If it happens to produce sound on your AV receiver , then Congrats...


you have just troubleshooted a large percentage on electronic circuits

inside the TV ( even without opening it up ).


I can post further , while I await for your answer , to resolve the problem

you are having and post if you can further DIY ( inside the unit )

Posted on Oct 09, 2010

  • 8 more comments 
  • Rommel Cana
    Rommel Cana Oct 09, 2010



    here is a copy of your manual :

    http://tv.manualsonline.com/manuals/mfg/...

    refer to page 26 for checking on the audio settings.



    AV Receiver means an Audio Video receiver , it could be any brand that you may have


    Since headphones is OK , then at least the problem is minimal, could just be the settings

    ( audio ) and I hope it is not the amp or associated circuits like speaker

  • Rommel Cana
    Rommel Cana Oct 09, 2010



    an AV receiver is something that have a separate speaker ( on most big speakers )

  • Rommel Cana
    Rommel Cana Oct 09, 2010



    On your satellite receiver , how is it connected to your TV?, is it from the RF ant IN or from the TV

    AV ( Audio-Video ) Input , and what kind of cable have you used?

  • Rommel Cana
    Rommel Cana Oct 09, 2010


    thanks for the info,

    more details on page 26 of the manual


    some of it,

    Surround >>>>on / off , set it to Off

  • Rommel Cana
    Rommel Cana Oct 09, 2010

    it might cost you more ,( Main Board ) than if you have an AV receiver


    But AV receiver is more costly if you do not have one,


    do you have other stereo amplifier in there?


    Or can you be able to open the unit ? to be precise on what to check for?



    A simple computer speaker can do the trick , by connecting it on your TV headphones

    jack , more cheaper than the solutions above


    ( Only if you can hear sound on your headphones )


  • Rommel Cana
    Rommel Cana Oct 09, 2010



    here are the details for the possible board:




  • Rommel Cana
    Rommel Cana Oct 09, 2010
  • Rommel Cana
    Rommel Cana Oct 09, 2010



    Before ordering anything :

    here are sample troubleshooting:



    a ) Start with the input , then to the op-amp IC. b ) check your cable like those above for co


    these may not be exactly like yours, but the process in troubleshooting is the same.


    you may need a multimeter


    need to measure voltages on the speaker terminal, referencing the chassis as the ground

    ( meaning negative of your multimeter ) and post voltages on it.

  • Rommel Cana
    Rommel Cana Oct 09, 2010



    Post voltages ( speaker terminal ) when:

    a) speaker is connected

    b ) speaker is disconnected ( one terminal only )


    Post voltages on the SP ( speaker out to your speaker )

    a ) when it is connected ( speaker )

    b ) when one terminal is disconnected


    Output of SP have two ( 2 ) terminals on each

    you may have to measure each output separately





    Connect ( or clip ) the negative probe of your multimeter ( set to Volts ) on the chassis


    when measuring for voltages


    and keep one hand in your pocket

  • Rommel Cana
    Rommel Cana Oct 09, 2010


    please check if these board looks like yours:

    http://cgi.ebay.com/275551-MAIN-UNIT-40-...

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