Question about LG Televison & Video

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NO sound - LG Televison & Video

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  • John Pearson Oct 08, 2009

    The model is 32lc2db-ec

    serial number 701mapno8216

    when the problem first started we would leave the tv on for about 45-60 minutes them turn it of and then back on and the sound would start up. but last night it went off and will not come back on

  • John Pearson Oct 11, 2009

    The sound has now come back. But it takes about 1 hour for it to come on. I took it apart yesterday and checked the cards for any cold solder joints with a magnifying glass and every thing looks ok. I thought that maybe it was a dirt problem. That is not the case. Put it back together and it is still the samething. If you have any other ideas please let me know. I wil try the DVD player and let you know tomorrow.It dose seem to be heat realated. Other than the other night when it went off completly. I had done everything esles that you said to try.

    Thanks

    John Pearson

  • John Pearson Oct 12, 2009

    Model # 32LC2DB-EC

    Serial # 701MAPNO8216

    I hooked up the DVD playewr and it made no difference. I have unpluged it several time and left it but has made no difference. also have set it back to factory specs. Last night it was working fine after about a 1 hour wait and then it started to make a clicking sound like you where flicking a switch on and off then the sound stopped and would not come back

    John Pearson

  • John Pearson Oct 13, 2009

    yes it is an LG

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3 Answers

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Unplug TV from AC wall socket for couple of minutes, replug back in and turn it On.
If sound does not come, let me know exact model number of your LG TV to provide you technical info to solve sound issue.
Thanks.

Posted on Oct 11, 2009

  • Shahid Electronics
    Shahid Electronics Oct 12, 2009

    Model # 32LC2DB-EC

    Serial # 701MAPNO8216

    I hooked up the DVD playewr and it made no difference. I have unpluged
    it several time and left it but has made no difference. also have set
    it back to factory specs. Last night it was working fine after about a
    1 hour wait and then it started to make a clicking sound like you where
    flicking a switch on and off then the sound stopped and would not come
    back

    John Pearson
    ======================================================

    Is it LG brand TV?
    Please reply so I will check its schematics for possible cause of problem.
    Thanks.



  • Shahid Electronics
    Shahid Electronics Oct 13, 2009

    yes it is an LG
    ========================================

    OK, LG 32LC2DB-EC

    Please check 18 Volt at L421 on power supply board that drives audio output amplifier IC in TV.
    If 18 volts are ok, audio amplifier chip TAS5122 is bad, replace it.
    and if 18 volts are not at L421, power supply board is bad, replace it.
    If 18 volt is OK and audio output amplifier chip is also ok then digital sound processor or sound processor is bad and main board of TV will be replaced.
    Let me know if you need service manual copy if you are repairing TV by yourself.
    Thanks.




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  • Master
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Hi

Thanks for using FixYa. Please connect the TV with a DVD player and check if the issue is with the TV or not. Also try changing the Component cables with an HDMI cable or Component cables if using HDMI. After this is checked.
If everything is fine then go to the menu setting and check for your input settings (audio options). Use the same menu to change other audio settings, and see that the TV speaker is not set to "Off".
If this doesn't help then MSP4450K IC (Main Audio Processor) might have gone bad and needs to be checked & replaced.
Please do accept the solution if the issue is resolved or else revert for further assistance.
Thanks
Rylee

Posted on Oct 08, 2009

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  • Expert
  • 157 Answers

Can you get the model number,so I can research your problem.

Posted on Oct 08, 2009

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Posted on Jan 02, 2017

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