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820-2915-B not charging

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  • 820-2915-B not charging

    Hi to everyone!

    I have here a 820-2915-B board that after connecting to a defective charger (power cord was damaged and shorted) stopped charging battery.
    Logic board works perfectly if battery is charged, and i can see green light (no dim, full bright).
    I've already changed magsafe connector with no effects.

    Where you suggest to start?

    thanks!

  • #2
    Check R7005, D7005, R7021/22, R7051/52. If any of them are bad then U7000 will be dead too.

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    • #3
      is battery recogniced on OS???? If yes, check R7051-R7052 or resistance between pins 7-18 from U7000, if it is not detected check voltage on pins 4 and 6 from J6950 it should be about 3.4V..... Report values.....

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      • #4
        yes, battery is recognized!
        i will check and post everything, meanwhile thanks guys!

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        • #5
          R7051 2.6 ohm
          R7052 0.4 ohm
          Between pins 7-18 i get 24M

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          • #6
            I asked for more.....

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            • #7
              Originally posted by diode View Post
              R7051 2.6 ohm
              R7052 0.4 ohm
              Between pins 7-18 i get 24M
              Wow sorry a typo, i meant pin 17 and 18..... and what about dukefawks measurements request??

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