SONOS Play 1 no power burnt out component

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  • kalemaroni
    Senior Member
    • Jun 2016
    • 171
    • UK
    #1

    SONOS Play 1 no power burnt out component

    I need to replace this burnt out component but don't know what it is. Can anyone help identify it please? It's on the underside of the board.

    2 pictures, one full board, one closeup:





    Tags: None
    • R_J
      Badcaps Legend
      • Jun 2012
      • 9515
      • Canada
      #2
      Re: SONOS Play 1 no power burnt out component

      Fan6751, The is will likely drive a mosfet on the other side and it will also be blown
      Attached Files
      Last edited by R_J; 03-12-2022, 01:21 PM.

        Comment

        • lotas
          Badcaps Legend
          • Jan 2016
          • 4459
          • Russia
          #3
          Re: SONOS Play 1 no power burnt out component

          In addition to the microcircuit, the R178 resistor burned out, and rather something else, you need to ring its entire harness.

            Comment

            • Agent24
              I see dead caps
              • Oct 2007
              • 4913
              • New Zealand
              #4
              Re: SONOS Play 1 no power burnt out component

              Check your main filter capacitor too. If it's bad, that could be why the MOSFET blew to begin with. The MOSFET snubber network is also suspect.

              I would also check diodes etc around the FAN6751, some may be shorted from the same voltage spike that blew it.
              "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
              -David VanHorn

                Comment

                • lipas22
                  New Member
                  • Aug 2016
                  • 5
                  • uk
                  #5
                  Re: SONOS Play 1 no power burnt out component

                  hi guys .
                  can you help please . i need value of R178
                  thanks

                    Comment

                    • keks19
                      New Member
                      • Nov 2017
                      • 3
                      • Europe
                      #6
                      Re: SONOS Play 1 no power burnt out component

                      Hi, R178 measures 148Ohms (in circuit)

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