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    sharp lc32l400m

    hi to all.
    problem is pic ok but no sound in all inputs.
    when I touch my finger in the smd amp ic I can hear some noise in the speakers.
    I try also all the menu reset and also the factory reset no joy.am I missing something in the reset procces or I just have to order a new main board its seems .
    that it cant be repair (the main board).anyone hade the same problem?.
    thanks willyam

    #2
    Re: sharp lc32l400m

    What equipment do you have - oscilloscope?
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

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      #3
      Re: sharp lc32l400m

      Does it have Audio line level OUTPUT Red and White RCA jacks? If it does, try using that outputs to feed powered speakers such as PC speakers system to see if you get the sound from those two RCA jacks OK.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

      Comment


        #4
        Re: sharp lc32l400m

        Thanks tom66 and budm yes i got osci.
        But its seems to me that the problem is in the main ic wiyh big cooling.
        Ther is no way to get to that ic.
        I will check about what budm suggestion.
        Willyam1

        Comment


          #5
          Re: sharp lc32l400m

          Well, once you try budm's suggestion, you can look up the datasheet of each chip in the audio chain and test the output with a scope, and see if one chip somewhere is malfunctioning.
          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

          Comment

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