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Board is 820-00967
Video connector looks good, no knocked components nearby. One knocked what i presume is a resistor near the connector
I noticed another knocked component near the first one, see the arrow.
Hello friends,
Client has attempted CPU replacement on this, after replacement client said internal display stopped working but external still worked. Client bought new display and mounted it, internal still doesnt work.
Component im pointing to in image has been ripped off and 2 pins in cpu...
Customers kid stepped on it, now it exhibits ram issues, OS crashes spontaneously, memtest throws errors almost immediately.
Board has been inspected carefully, no visible damage, inspected ram chips/area too.
Initially we concluded it was an issue with customers OS install as our external...
Ive noticed something new, when the macbook is booted (it seems to only like targetmode in the chassi), the CPU is making a lot of noise when thunderbolt cable is plugged in, once you pull it out it stops making the noise, perhaps its an issue with a controller rather than NAND? Im not really...
Checked everything under NAND shields, no signs of any damage, corrosion or similar
I keep confusing DFU and T1/T2, sorry about that
Will test bios
Edit: the diode values i got are very different from openboarddata.org values, you think its fine?
Hello friends,
I have a macbook here that the customer ran an update on, after this, the macbook started to become hard to boot, only booted sometimes.
When i started troubleshooting i couldnt get it into system at all.
Data very important
Things tested:
Safe mode several times: boots to...
Only voltage on inductors i have is 1v on L7270
L7420, L7210, L7220, L7410 are 0v
PPBUS_HS_CPU=12.59v
Board bare on desk, only charger connected, still draws 0.2a
Tried revive again, this time i get the lock symbol.
It went through two times.
Tested target mode after this, also pram for 1 minute, nothing happens.
Still no activity LED
Have a weird board here,
It came in for "macbook chimes but doesnt start"
Fan spins, trackpad clicks, usb-c ports provide power
No display at all, no external either, tested new display
DFU revive went through, although it didnt end in the lock symbol but DFU symbol, no change
Data is extremely...
I tried with board alone on desk first, then in chassi after i saw the note about touchbar sometimes needing to be connected.
SWK003 was closed when i connected DFU and charger cable, never popped up in AC2 so i never opened it, do i need to open regardless of it showing in AC2?