Mbp 15 mid 2010 (no ppbus boost no batt)

[reassor]

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)

[dellxps15]

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

report u7000 voltage.
green light on magsafe ?

[piernov]

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

[reassor]

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

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.

[reassor]

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

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

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

[reassor]

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

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

[reassor]

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

[dellxps15]

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

[reassor]

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

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

[piernov]

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

Why not buy a full donor board?

[reassor]

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.

[piernov]

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

Buy from Aliexpress, less than 20€.