Bush 50/122f no audio at all

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  • comptek
    Badcaps Veteran
    • Aug 2013
    • 606
    • uk

    #1

    Bush 50/122f no audio at all

    Hi this has no audio output either on speakers /headphones, i have checked settings and service menu for problems all ok
    all voltages are ok

    mainboard is a horrid T.MSD309.B81C 12176 all voltage regulators check out ok

    any pointers will be great thanks guys
  • ReeceyBurger123
    Never Give Up !
    • May 2014
    • 7325
    • Britain

    #2
    Re: Bush 50/122f no audio at all

    Let me guess this uses a 1517P Ic for the audio ?
    Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

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    Comment

    • comptek
      Badcaps Veteran
      • Aug 2013
      • 606
      • uk

      #3
      Re: Bush 50/122f no audio at all

      not the big 14 pin one like the old ones this is surface mount

      Comment

      • ReeceyBurger123
        Never Give Up !
        • May 2014
        • 7325
        • Britain

        #4
        Re: Bush 50/122f no audio at all

        Got an image of the Ic buddy ? Also have you checked the output and input for it ?
        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

        https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • comptek
          Badcaps Veteran
          • Aug 2013
          • 606
          • uk

          #5
          Re: Bush 50/122f no audio at all

          Originally posted by ReeceyBurger123
          Got an image of the Ic buddy ? Also have you checked the output and input for it ?
          Here you go bud
          Attached Files

          Comment

          • ReeceyBurger123
            Never Give Up !
            • May 2014
            • 7325
            • Britain

            #6
            Re: Bush 50/122f no audio at all

            Hmm looks like these boards use the main speaker amp to drive the headphone out as well. Have you checked the voltages going to the amp against the schematic ? On my channel I have a video called "Technika Led Tv No Sound Repair" the amp Ic was getting the voltages but nothing was coming out.
            Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

            https://www.facebook.com/Telford-Tel...7894576335359/

            Comment

            • comptek
              Badcaps Veteran
              • Aug 2013
              • 606
              • uk

              #7
              Re: Bush 50/122f no audio at all

              Originally posted by ReeceyBurger123
              Hmm looks like these boards use the main speaker amp to drive the headphone out as well. Have you checked the voltages going to the amp against the schematic ? On my channel I have a video called "Technika Led Tv No Sound Repair" the amp Ic was getting the voltages but nothing was coming out.
              hi Reece i did see your video and yes no audio at all signal going in but nothing out robbed a TPA3123 off a board and its now working great its now 25w instead of 15w lol

              Comment

              • ReeceyBurger123
                Never Give Up !
                • May 2014
                • 7325
                • Britain

                #8
                Re: Bush 50/122f no audio at all

                Wow can you feel the audio power from the speakers with 25w ? Haha lol glad to hear its fixed, my suggestion would be to heatsink that Ic mate Have you an image of your work ?
                Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                https://www.facebook.com/Telford-Tel...7894576335359/

                Comment

                • comptek
                  Badcaps Veteran
                  • Aug 2013
                  • 606
                  • uk

                  #9
                  Re: Bush 50/122f no audio at all

                  Originally posted by ReeceyBurger123
                  Wow can you feel the audio power from the speakers with 25w ? Haha lol glad to hear its fixed, my suggestion would be to heatsink that Ic mate Have you an image of your work ?
                  Here you go bud
                  The sound is amazing when the Base line kicks in "NOT" 😊
                  Attached Files

                  Comment

                  • comptek
                    Badcaps Veteran
                    • Aug 2013
                    • 606
                    • uk

                    #10
                    Re: Bush 50/122f no audio at all

                    ** ADMIN** can you edit the title heading should read BUSH 50/211F and not Bush 122f thank you
                    Last edited by comptek; 04-04-2016, 12:39 PM.

                    Comment

                    • comptek
                      Badcaps Veteran
                      • Aug 2013
                      • 606
                      • uk

                      #11
                      Re: Bush 50/122f no audio at all

                      Originally posted by ReeceyBurger123
                      Wow can you feel the audio power from the speakers with 25w ? Haha lol glad to hear its fixed, my suggestion would be to heatsink that Ic mate Have you an image of your work ?
                      put a thermal pad underneath

                      Comment

                      • ReeceyBurger123
                        Never Give Up !
                        • May 2014
                        • 7325
                        • Britain

                        #12
                        Re: Bush 50/122f no audio at all

                        Wait is that a different board lol the cap is different ? Also yeah TP will work
                        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                        https://www.facebook.com/Telford-Tel...7894576335359/

                        Comment

                        • comptek
                          Badcaps Veteran
                          • Aug 2013
                          • 606
                          • uk

                          #13
                          Re: Bush 50/122f no audio at all

                          Originally posted by ReeceyBurger123
                          Wait is that a different board lol the cap is different ? Also yeah TP will work
                          no its not, the original cap bulged with the heat lol
                          it was not quite under the foil i took the big one out lol

                          Comment

                          • ReeceyBurger123
                            Never Give Up !
                            • May 2014
                            • 7325
                            • Britain

                            #14
                            Re: Bush 50/122f no audio at all

                            Lol fair enough
                            Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                            https://www.facebook.com/Telford-Tel...7894576335359/

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