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Dewalt DC012 Shop Radio no Sound

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    Dewalt DC012 Shop Radio no Sound

    HI guys

    I am a total rookie when it comes to sound equipment, but have some limited electronics knowledge. I have a Dewalt DC012 Shop radio. The radio switch on, change channels, even search for radio channels, but it's got no sound. Nothing from the speakers. Both the speakers measures 5.8ohms.

    DO you have any idea what I can look for

    #2
    Re: Dewalt DC012 Shop Radio no Sound

    Start by upload good clear outside and inside pictures so we can see what we are dealing with.
    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


      #3
      Re: Dewalt DC012 Shop Radio no Sound

      try plugging into aux .

      Comment


        #4
        Re: Dewalt DC012 Shop Radio no Sound

        Hi guys

        Im sorry for the long time delay. Please find herewith pictures of the Power supply board and I think Sound board. The only voltages I could measure was on CN508.

        If ground is ground in Connector, then the 13V measured as 16.5V and the AC Det. as 9.86V.

        Thank you
        Attached Files

        Comment


          #5
          Re: Dewalt DC012 Shop Radio no Sound

          shorted caps near the amp chip

          Comment


            #6
            Re: Dewalt DC012 Shop Radio no Sound

            did you try aux in yet ?

            Comment


              #7
              Re: Dewalt DC012 Shop Radio no Sound

              Hi guys,

              Thank you for your help. I could fix my Shop Radio. I found one 470mF cap close tot the AMP chip, replaced it and now my Radio is working again.

              Thanks again

              Comment


                #8
                Re: Dewalt DC012 Shop Radio no Sound

                I would recommend that you replace all the capacitors

                Especially if they are non brand capacitors
                9 PC LCD Monitor
                6 LCD Flat Screen TV
                30 Desk Top Switching Power Supply
                10 Battery Charger Switching Power Supply for Power Tool
                6 18v Lithium Battery Power Boards for Tool Battery Packs
                1 XBox 360 Switching Power Supply and M Board
                25 Servo Drives 220/460 3 Phase
                6 De-soldering Station Switching Power Supply 1 Power Supply
                1 Dell Mother Board
                15 Computer Power Supply
                1 HP Printer Supply & Control Board * lighting finished it *


                These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                2 Hem Saw Computer Stack Board

                All of these had CAPs POOF
                All of the mosfet that are taken out by bad caps

                Comment


                  #9
                  Re: Dewalt DC012 Shop Radio no Sound

                  Originally posted by kc8adu View Post
                  shorted caps near the amp chip
                  What chip is the amp? I have a similar problem, except the volume is very low at full volume.

                  Comment


                    #10
                    Re: Dewalt DC012 Shop Radio no Sound

                    amp is under the aluninium plate that looks like wings

                    Comment


                      #11
                      Re: Dewalt DC012 Shop Radio no Sound

                      Originally posted by stj View Post
                      amp is under the aluninium plate that looks like wings
                      Thanks, I'll have a look through my radio.

                      Comment


                        #12
                        Re: Dewalt DC012 Shop Radio no Sound

                        https://www.badcaps.net/forum/attach...4&d=1581186515

                        Verify that you do have Voltages feeding that black connector CN508, also show us the pin names for the CN508.
                        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


                          #13
                          Re: Dewalt DC012 Shop Radio no Sound

                          Hi, I have the same DC012, no sound. Measured the output voltage of the power pcb assy (which feeds the radio pcb), supposed to be 13V, reads 16V (circled in orange).

                          Could this 3V prevent the radio board to function properly?

                          The visual check does not show anything damaged or burnt on all pcbs, except for the resistor (circle in red) where the pcb changed color. The color bars indicates a 15 ohms resistor which reads good. The two blue relays on the left get pretty hot too.

                          Thank's

                          Gilles
                          Attached Files

                          Comment


                            #14
                            Re: Dewalt DC012 Shop Radio no Sound

                            Ok, thank's to everyone. Project closed, radio sent to recycling center. Gilles

                            Comment

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