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Hi all!
Came in this 820-00239-09. No signs of corrosion, MB looks perfect.
Customer report that the machine works perfect yesterday evening, but this morning macbook won't turn on.
CPU Vcore steady at 1.07v measured on L7210/L7220 so no boot I guess.
with another bin came from this forum...
Hi guys.
First time on this kind of board.
U3000 blown. Removed and traces underneath are fine.
USB stuck at 5V 0,50amp on three of the four usb-c port.
Bottom port on the side of U300/U400 drain only 0,15amp.
Where should I start checking?
Thank you
Hi guys.
This motherboard came in with liquid damage.
Replaced some burnt component . Now I have Magsafe light.
PM_SLP_S4_L and ALL_SYS_PWRGD pulsing every 5 second.
if i remove U8030 then PM_SLP_S4_L stays high.
Need some advice here
Thank you
Hi all!
Customer report sudden shut off while working.
No signs of spills and no damage.
It draws 5v - 0,02A from all USB ports.
Found pure short of PPBUS_G3H (0.000 on diode mode, 0ohm).
As you told me in an old case is safe to inject voltage to find the issue since is pure short , right?
Hi guys
Very tiny liquid damage.
Macbook came in with a problem on SMC Reset. Everytime the power button was triggered, smc will perform a reset and macbook will not start .
I Fix it and now it works but fans goes high speed.
Tested with only trackpad, I/O Board, fan connected.
Already tried...
Hi All!
Got this board stuck on 5v - 0,34 amp not switching to 20v.
Replaced U3200 because it gets very hot when charger is connected.
Now the board is freezed at 5v - 0.03 amp.
All the CD3215 seems to work fine, all the LDO lines are stable at 1,80v
PPDCIN_G3H_CHGR =5v
PP3V3_G3H=3,4
Missing...
Hi guys,
This is my first time working on this board...
Stuck on 5V 0,1A.
I have short on PPBUS_G3H. Removed F7000.
Non more short on Pin 1, Pin 2 still shorted.
I ordered a PSU to inject voltage , meanwhile ... there's something that I can do to go further on diagnosis?
According to...
Hi guys, we sold this mac 6 month ago to trusted client.
The machine was before used in our store for almost one year without issues. Never repaired before...
Anyway...
No post, No usb activity ,machine turns on , green and amber light , no fan spin but I assume that is normal on this model...
Hi guys, come in this macbook already inspected from another store.
Customer report liquid spill near fingerprint button. Motherboard seems to be in good shape.
Starts with 5v then it goes to 20v normally.
PPBUS_G3H 12,5v
PP3v3_G3H 3,3v
It's my first time on a t2 machine so i really don't know...
Hi guys! This is my first repair on a 820-00875.
Customer report no power after a small water spill near trackpad.
When I connect usb-c 61w power unit, fan starts and spin at lightspeed. Nothing else happens.
After checking power lines found that PP3V3_S0 is missing (0,6v).
Found some corrosion...