Cdx blowing internal fuse instantly

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  • #23719
    Kawasakiinit
    BRONZE Member
      • Topics Started 4
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      Hi guys please can you help.

       

      I purchased my cdx from someone who has recapped it on the power board but it’s blowing the internal fuse(the solder in though hole one) I’ve noticed some of the new caps seem to be the wrong way round with the positive going to ground on the board. Does this matter on this board and would that blow the fuse?

      Sorry I’m a novice trying to learn

      Thanks

      Dave.

      #23721
      Die_Bogener
      BRONZE Member
        • Topics Started 2
        • Total Posts 240

        Every wrong polarized cap will make a short, even small ones.

        … and if small enough: a very nice BANG!

        #23725
        Dillen
        Moderator
          • Topics Started 3
          • Total Posts 587

          Capacitors working with negative voltages will often have their positive pin to ground.
          Check before assuming it’s wrong.

          Martin

          #23830
          Kawasakiinit
          BRONZE Member
            • Topics Started 4
            • Total Posts 7

            Thanks guys

            Really sorry for my lack of knowledge I’m just trying to learn .

            I’ve manged to get a schematic for this power board and indeed the caps are correct as they are .

            Are there any common fuse blowing issues with this unit I should look into . I have today taken all the mosffets ? off the heat sink and am now waiting for my component analyzer although i think they are ok as the board actually doesnt blow the fuse when the other boards are not plugged into it. the plug that does blow the fuse is the one that goes to the disk drive , Any ideas please ??

            thanks again Dave .

             

            ps what is the component that goes from the board where the audio cables are soldered on to the heat sink (mosfet screw ) googled it but nothing ??

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