Mbp 15 mid 2010 (no ppbus boost no batt)

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  • reassor
    Senior Member
    • Apr 2021
    • 176
    • Poland

    #1

    Mbp 15 mid 2010 (no ppbus boost no batt)

    Hey all.
    Bought this pile of junk as a project :P

    So mobo is 820-2850-a (i5)

    Symptomps :

    -no battery detected (It sees it but does not know cycles or anything for that matter - brand, model etc.)
    - no PPBUS_G3H boost to 12.6v - it stays 12.24v whole time. Yet SMC works. With or w/o bat / BIL etc.

    Everything else works as far as i can tell

    Any ideas before i dump money again for random junk to do SMC swapy?

    forgot to add - all current sensing tested + u7000 swaped (was dead)
    Last edited by reassor; 09-28-2021, 02:16 AM. Reason: adding stuff
  • dellxps15
    Badcaps Legend
    • Feb 2014
    • 1588
    • italy

    #2
    Re: Mbp 15 mid 2010 (no ppbus boost no batt)

    report u7000 voltage.
    green light on magsafe ?

    Comment

    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France

      #3
      Re: Mbp 15 mid 2010 (no ppbus boost no batt)

      https://www.badcaps.net/forum/showpo...50&postcount=2

      2.2.2. Battery not detected
      Issue on charging circuit SMBUS.
      Check voltage and diode mode to ground on charging circuit SMBUS SDA and SCL lines
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

      Comment

      • reassor
        Senior Member
        • Apr 2021
        • 176
        • Poland

        #4
        Re: Mbp 15 mid 2010 (no ppbus boost no batt)

        Originally posted by dellxps15
        report u7000 voltage.
        green light on magsafe ?

        yes green light. Voltages are comparable to what you listed in some old thread.
        will list em if needed. Will get inside again tomorrow cause ordered airport card with mount and stuff so ill check them again.Thx for reply

        Thx Piernov for that link.

        Comment

        • reassor
          Senior Member
          • Apr 2021
          • 176
          • Poland

          #5
          Re: Mbp 15 mid 2010 (no ppbus boost no batt)

          Diode mode (red on ground). Battery out. BIL disconnected (with it plugged in same result)

          SDA = 0.532v
          SCL = 0.516v

          voltages: AC + batt
          SDA = 3.41v
          SCL = 3.41v

          voltages: Batt only

          SDA = 3.41v
          SCL = 0.81v

          Detect_L is pulled down to 0.222v

          I hope i didn't swap the labeling of those lines

          PPBUS_G3H = 12.24v on charger+batt (w/o batt same) and 11.58v on battery.

          Camera cable is destroyed so cannot say if light sensor is working. All functions like brightness, KB lights and fans seem fine.
          Cheers
          Last edited by reassor; 09-28-2021, 07:08 AM. Reason: error correction

          Comment

          • reassor
            Senior Member
            • Apr 2021
            • 176
            • Poland

            #6
            Re: Mbp 15 mid 2010 (no ppbus boost no batt)

            Originally posted by dellxps15
            report u7000 voltage.
            All measured on charger only with power off state.
            Near or on chip itself

            U7000 / ISL6259HRTZ
            Pin01 = 0v CHGR_AGATE
            Pin02 = 18.54v PPCHGR_DCIN
            Pin03 = 4.46v CHGR_ACIN
            Pin04 = 3.40v VRFQ
            Pin05 = 1.16v CHGR_ICOMP
            Pin06 = 3.41v CHGR_CELL
            Pin07 = 0.86v CHGR_VCOMP
            Pin08 = 2.046v CHGR_VNEG
            Pin09 = 0.03v CHGR_AMON
            Pin10 = 3.416v SMBUS_SMC_5_G3_SDA
            Pin11 = 3.416v SMBUS_SMC_5_G3_SCL
            Pin12 = 3.416v PP3V42_G3H
            Pin13 = 3.416v CHGR_RST_L
            Pin14 = 3.277v SMC_BC_ACOK
            Pin15 = 0.062v CHGR_BMON
            Pin16 = 12.24v CHGR_BGATE
            Pin17 = 12.27v CHGR_CSO_N
            Pin18 = 12.27v CHGR_CSO_P
            Pin19 = 5.031v PP5V1_CHGR_VDD
            Pin20 = 5.012V PP5V1_CHGR_VDDP
            Pin21 = 0.219v CHGR_LGATE
            Pin22 = GND 0v
            Pin23 = 12.27v CHGR_PHASE
            Pin24 = 12.46v CHGR_UGATE
            Pin25 = 16.52v CHGR_BOOT
            Pin26 = 18.16v CHGR_SGATE
            Pin27 = 18.42v CHGR_CSI_N
            Pin28 = 18.42v CHGR_CSI_P
            Last edited by reassor; 09-29-2021, 10:24 AM. Reason: moar info

            Comment

            • reassor
              Senior Member
              • Apr 2021
              • 176
              • Poland

              #7
              Re: Mbp 15 mid 2010 (no ppbus boost no batt)

              Just reporting in.

              As suspected it was SMC. Got 1 for 30$ and now everything works like a charm

              thx all for patience and my mumbling ;p

              Comment

              • dellxps15
                Badcaps Legend
                • Feb 2014
                • 1588
                • italy

                #8
                Re: Mbp 15 mid 2010 (no ppbus boost no batt)

                glad to ear it i think all in this thread was with no idea left as all remind of bad smc, but u write on top that smc was ok

                Comment

                • reassor
                  Senior Member
                  • Apr 2021
                  • 176
                  • Poland

                  #9
                  Re: Mbp 15 mid 2010 (no ppbus boost no batt)

                  Originally posted by dellxps15
                  glad to ear it i think all in this thread was with no idea left as all remind of bad smc, but u write on top that smc was ok
                  well no ppbus adjust to 12.56v was kinda give away its borked. But i was hoping there was something with comunication :P - For me it was working since everything else smc wise was working

                  Found 1 online store here in poland with "refurbished" chips - so i thought oh cool it will come reballed ready to go

                  If you saw what i got you would

                  It was a cutout from dead board - like if you took a electric saw and cut the fragment with smc on it LOL.

                  Had to reball it by hand (do not have stencil for it) and it fixed everything - there was a moment of horror when i plugged magsafe in

                  Btw After we soldered it on i measured with diode setting (red to ground):

                  SDA = 0.505v
                  SCL = 0.506v

                  So huge diffirence.

                  I think i fried it when i was measuring u7000 (was hunting for good 1 from our old boards - 4 didnt work LOL)
                  Bough new ones and that did the trick (these are cheap).


                  Cheers - i learned alot about macs (my first 1 ;p).
                  Think ill keep it

                  Comment

                  • piernov
                    Super Moderator
                    • Jan 2016
                    • 4435
                    • France

                    #10
                    Re: Mbp 15 mid 2010 (no ppbus boost no batt)

                    Why not buy a full donor board?
                    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                    Comment

                    • reassor
                      Senior Member
                      • Apr 2021
                      • 176
                      • Poland

                      #11
                      Re: Mbp 15 mid 2010 (no ppbus boost no batt)

                      These cost as much as i paid for that laptop (even broken ones) atleast here in poland.

                      Comment

                      • piernov
                        Super Moderator
                        • Jan 2016
                        • 4435
                        • France

                        #12
                        Re: Mbp 15 mid 2010 (no ppbus boost no batt)

                        Buy from Aliexpress, less than 20€.
                        OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                        Comment

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