MacBook Pro A2338 [820-02773] No Audio (Speakers and Microphone)

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  • classicandy
    Badcaps Veteran
    • Apr 2018
    • 309
    • Nigeria
    #1

    MacBook Pro A2338 [820-02773] No Audio (Speakers and Microphone)

    Hi Everyone,

    Please, I have a MacBook Pro A2338 M2, board number : 820-02773. The speakers and the microphone of the Mac are not working and I need assistance in fixing.

    UR730 got damaged and short-circuited the motherboard. After removing the shortened IC; before and after putting the new one I ordered, the speakers [specifically the other one not affected by this IC] and the microphone are still not working. I do have sound through a Bluetooth speaker device or when I connect a headphone with microphone to the jack 3.5mm input. Also, media files do not play unless ​a bluetooth speaker or headphones are connected.

    schematics and boardview; https://www.badcaps.net/forum/troubl...62#post1560562

    I would be glad if I can get any clues to where to lookout for. Big Thanks in advance
    Tags: None
    • classicandy
      Badcaps Veteran
      • Apr 2018
      • 309
      • Nigeria
      #2
      Originally posted by classicandy
      Hi Everyone,

      Please, I have a MacBook Pro A2338 M2, board number : 820-02773. The speakers and the microphone of the Mac are not working and I need assistance in fixing.

      UR730 got damaged and short-circuited the motherboard. After removing the shortened IC; before and after putting the new one I ordered, the speakers [specifically the other one not affected by this IC] and the microphone are still not working. I do have sound through a Bluetooth speaker device or when I connect a headphone with microphone to the jack 3.5mm input. Also, media files do not play unless ​a bluetooth speaker or headphones are connected.

      schematics and boardview; https://www.badcaps.net/forum/troubl...62#post1560562

      I would be glad if I can get any clues to where to lookout for. Big Thanks in advance
      Any help on this please ???

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 14586
          • Canada
          #3
          Issue could be with the headphone connector. Also inspect UR500 area which is the audio codec.

            Comment

            • mon2
              Badcaps Legend
              • Dec 2019
              • 14586
              • Canada
              #4
              Also,

              audio - Why are my Macbook's internal speakers not available? - Ask Different (stackexchange.com)​

                Comment

                • classicandy
                  Badcaps Veteran
                  • Apr 2018
                  • 309
                  • Nigeria
                  #5
                  Originally posted by mon2
                  Also,

                  audio - Why are my Macbook's internal speakers not available? - Ask Different (stackexchange.com)​
                  Thanks for your reply and suggestions.

                  I've tried the steps listed there however, there is no boot chime at startup, audio output shows as MacBook Pro Speakers [Built-in], volume slider works as it suppose to, there is no red light coming from the 3.5mm jack indicating Digital Out and it doesn't indicate Digital out as well in the audio output too.

                  The Mic Input Level also detects sound input but Voice Memos is not able to record any sound. The record counter stays at zero.

                    Comment

                    • classicandy
                      Badcaps Veteran
                      • Apr 2018
                      • 309
                      • Nigeria
                      #6
                      Originally posted by mon2
                      Issue could be with the headphone connector. Also inspect UR500 area which is the audio codec.
                      I seem to think now that UR500 must have been damaged too and would need to be replaced. I would place an order for the IC and install it when it arrives and come back here to relate my findings. Thanks for your help so far, much appreciated.

                        Comment

                        • Snazzysmith
                          New Member
                          • Aug 2017
                          • 8
                          • Australia
                          #7
                          Originally posted by classicandy

                          I seem to think now that UR500 must have been damaged too and would need to be replaced. I would place an order for the IC and install it when it arrives and come back here to relate my findings. Thanks for your help so far, much appreciated.
                          So did replacing the UR500 solve the problem?

                            Comment

                            • mon2
                              Badcaps Legend
                              • Dec 2019
                              • 14586
                              • Canada
                              #8
                              Silence is golden Have seen the audio codec being a fault on at least a few cases. Worth a replacement.

                                Comment

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