For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
Hey guys,
what is this issue? Is this somehow known?
data back up was possible trough target disk mode / recovery mode / not looping
system is monterey 12.5.1
Hey guys,
history to the board: liquid damaged - fixed - everything worked fine - then again liquid damage - now booting, everything good, but fans on full speed. replaced trackpad - fans still on full speed.
apple diagnostic is saying: problem with fan, PPF001, PPF004
what to do?
Hey guys,
title is saying everything. Board is clean. No liquid damage. Looks like new. AON is jumping and cycling from 8 - 11/12V...
Removed F5200 - Pin 1 is 12.3v stable.
Whats can i do?
Hey guys,
got this strange machine here. No liquid or drop damage.
I get 20V on the charger, fan spin for 1/2 second, then fan shuts off.
DFU revive went trough. I can access data via TDM. (seeing a Bootcamp partition?)
What to do?
Hey guys,
having a 820-01827-01 board here. no liquid / corrosion.
Had 5V on the charger, changed a faulty CD3215, now i got 20V, 1A draw. Machine is booting. Gives me a chime, Touch-Bar is turning on. But no internal or external image.
Possible U9850 damage? Even with no external image? Or...
hey guys,
having this board here. liquid damage (heavy). working with 02098 schematic.
had backlight problem. replaced backlight chip. backlight is there.
corrosion in the sound area.
display is also turning off and on. not stable picture. trackpad is not clicking.
what to do?
Hey guys,
whats going on with this machine?
Can do only SMC-RESET. Only Apple Logo and chime.
Option Key not working, no recovery partition, no hardware-test, nothing is working. Cant open bootpicker via option-key. No progress bar. Not booting at all. No safe mode possible...
Hey guys,
got something strange here. Customer told me, he changed the screen, then not working anymore?!
Board looks fine / no visible damage.
One CD3217 taking aroung 0,2A, should be working.
When i plug into the other port, 0,05A. When i connect to the same port, but flipped board, the...
hey guys,
machine came in like this (see photo). ppbus around 1v. rest of the board looking good.
replaced all affected components, replaced u7100 -> now ppbus is 4v not stable
chgr a/l gate is 0.02v? chgr_ugate is 5v
dcin is good / 16v.
what to do?
hey guys,
got a A2141 16" here. I can install catalina over internet recovery, but nothing else over usb.
"update failed" at the end of the progress bar in the recovery
dfu restore no help...
internet recovery is on sonoma now. (cmd+option+r)
any ideas?
Hey guys,
got a 15" A1707 here. 2TB SSD.
Boot into Recovery is possible. I see the SSD. But OS installation breaks up. After reboot the SSD is not showing up. After i reboot again via USB / Internernet recovery I see the SSD again.
Whats going on here?
Hey guys,
history: no green light on charger, fixed it, now starting, fans spinning, no chime, no picture/backlight
cpu vcore is present, goes up to 1.12v then jumps to 0.9v
any help? dead cpu?
Hey guys,
history:
3 ports were showing 5V/0.45A
1 port was dead / burn mark on chip / nothing on amp-meter
changed the chip. now the 3 working ports showing 5V/0.25 -> dead port showing now 5V/0A
ppbus_g3h / 3v3 are there, when i connect to the working ports. strange voltages when i connect...