makita electronic board

Discussion in 'General Electronics Chat' started by lhaye2x, Nov 25, 2010.

  1. lhaye2x

    Thread Starter New Member

    Nov 25, 2010
    1
    0
    hi all new member here, i done a starter electronics course earlier in the year.my problem is i have a makita battery charger and today it went bang.i checked the external fuse and the internal fuse ,they were OK.i have been looking through the electronic board and i can't see any thing that has blown
    as i said i have only done a starter course,but it was great,so i want to try and fix it myself.i noticed that the big capacitor 47uf is a bit dented at the bottom. any help would be grateful..
     
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,772
    931
    A picture might help us diagnose a fault. Can you get a good picture of the circuit board and the items you think don't look right?
     
  3. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
    If it was an audible "bang", don't plug it in again. The only things I know that go "bang" and not "snap" are electrolytic or tantalum capacitors. They sometimes spray foil "dust" all over the circuit, creating various shorts.

    Post high resolution and in focus images of both sides of the board so other issues can be guessed at.
     
  4. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Dented cap, not pregnant or bulging?

    Are you sure the circuit in the battery is not what went up?

    Is it a Lithium, Nickel Cadmium or Nickel-Metal Hydride battery and charger?
     
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