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Laptop charging circuit burned HELP!

Discussion in 'Troubleshooting and Repair' started by kentuliz, Jun 13, 2011.

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  1. kentuliz

    kentuliz

    4
    0
    Jun 13, 2011
  2. keat63

    keat63

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    Jun 8, 2011
    I'd suggest to keep looking on Ebay etc. the right one may turn up one day. Good luck though as I've been looking for a similar board for months.
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,505
    2,852
    Jan 21, 2010
    You're right. That looks pretty badly charred.

    The problem is not only replacing the chip, but determining why it died that way in the first place.

    The PCB looks to be damaged too, so it may be that you can't do a simple replacement of the chip.
     
  4. kentuliz

    kentuliz

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    0
    Jun 13, 2011
    it died because someone mismach + and - on a charger. :confused:
     
  5. Resqueline

    Resqueline

    2,848
    2
    Jul 31, 2009
    It seems to be a MOSFET power transistor (since it's being referred to as Q11) and it could even be a dual one. Googling for BD9R1N only produced two irrelevant results..
     
  6. kentuliz

    kentuliz

    4
    0
    Jun 13, 2011
    found needed parts :) now need to find who can resolder it. had a look to mainboard, seemsto be fine, just that chip burned
     
    Last edited: Jun 17, 2011
  7. TBennettcc

    TBennettcc

    292
    2
    Dec 4, 2010
    Mind telling us WHERE you found the parts, so that all here (and future) may also benefit?
     
  8. kentuliz

    kentuliz

    4
    0
    Jun 13, 2011
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