Sharp lc42d64u possible setting issue or bad tuner?

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  • whatusername
    Badcaps Veteran
    • Dec 2013
    • 456
    • United States
    #1

    Sharp lc42d64u possible setting issue or bad tuner?

    Hello again.. this sharp aquos LC-42D64U was my personal tv for the last year but i only used it as a additiion to my computer monitor for watching movies and also for playing ps4 both via hdmi.
    Last night when i switched to the 46 i took this to my nephews room so he can use it for a few days till it sells on CL but ran into a problem. i know all components work fine as does HDMI but when he connected his cable box to it via coaxial the picture came up fine but no audio. just a slight almost ear ringing sound and extremely muffled speech at high volume. every tv i fix he runs it thru a rigorous 3 day ps3 marathon and never had this problem before.. is it a setting or does this have a bad Q thingy? the sound display says mono and flashes from green to red and sometimes alternates from mono to sap on its own but no sound just the squeal
    Last edited by whatusername; 09-09-2014, 09:07 AM.
    Tags: None
    • kasfamily
      Badcaps Veteran
      • Aug 2014
      • 765
      • Russia
      #2
      Re: Sharp lc42d64u possible setting issue or bad tuner?

      may be
      Attached Files

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        • whatusername
          Badcaps Veteran
          • Dec 2013
          • 456
          • United States
          #3
          Re: Sharp lc42d64u possible setting issue or bad tuner?

          sound is already set to fixed and stil didnt work.. thanks for the reply though
          Last edited by whatusername; 09-09-2014, 10:38 AM.

            Comment

            • kasfamily
              Badcaps Veteran
              • Aug 2014
              • 765
              • Russia
              #4
              Re: Sharp lc42d64u possible setting issue or bad tuner?

              or
              Attached Files

                Comment

                • whatusername
                  Badcaps Veteran
                  • Dec 2013
                  • 456
                  • United States
                  #5
                  Re: Sharp lc42d64u possible setting issue or bad tuner?

                  ------>the sound display says mono and flashes from green to red and sometimes alternates from mono to sap on its own but no sound just the squeal<------

                  pressing the audio button switches it from mono to sap but it dont stay just makes a quick noise and continues to do above

                    Comment

                    • whatusername
                      Badcaps Veteran
                      • Dec 2013
                      • 456
                      • United States
                      #6
                      Re: Sharp lc42d64u possible setting issue or bad tuner?

                      well i just replaced the tuner board with another one out of the 46 because they are the same boards and still have same issue

                        Comment

                        • kasfamily
                          Badcaps Veteran
                          • Aug 2014
                          • 765
                          • Russia
                          #7
                          Re: Sharp lc42d64u possible setting issue or bad tuner?

                          which model cable box you use ?

                            Comment

                            • whatusername
                              Badcaps Veteran
                              • Dec 2013
                              • 456
                              • United States
                              #8
                              Re: Sharp lc42d64u possible setting issue or bad tuner?

                              its a cisco box from ATT Uverse... im over it i just plugged in a HDMI to the cable box and all is well... Maybe these TV"S dont like analog RF cable signals

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