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Quick update for the community.
After replacing the following components, I was able to reinstall the system as usual:
U7800 Power Management IC
U9000 SSD NAND Power IC
U9080 SSD & PP3V3_G3H Power chip
Hi, good morning.
According to the customer, the Mac restarted after a few hours of working on it and then stopped booting into the system.
All awake and main power lines are present in the NAND modules and are not clinging.
I have tried the revive option, which goes through all the steps...
I've checked all the components in that area and everything seems fine.
All measurements in diode mode match flexbv.
Only CHGR_GATE_Q1_R which on flexbv is 0.650 and on my board is 0.901. But I don't think this is a problem.
Just in case, I've replaced the U5200 - RAA489900. Replaced by the ISL9240 the pins listed and VDDIO voltage in schematics are the same.
But same as before. No changes in the voltages.
I need some help, please.
The Mac has no signs of life. There is no liquid and no short anywhere on the board.
All the coils measurements in diode mode are matching with the measurements on the FlexBV.
I've tried to connect to another Mac, but it won't recognise it.
Both USB-C ports are getting...
Just after posting, I ran another visual inspection on the logic board and discovered a missing resistor, R1540.
I had replaced many of them before performing the U.S. cleaning, but I missed that one, and I believe it might have fallen into the U.C. machine.
I replaced the missing resistors...
PLT_RESET_L - 3.33V
I know it's a silly question, but should an SPI IC from another logic board work without changing the Serial Number?
I swap the spi ic and same results.
Removed J6100
Hi, everyone.
I'm working on this board with liquid damage near U1900, R5614, C1210 and U5800.
I've replaced a few resistors and caps in those areas; some weren't turning on before.
So, after all the work I've done and doing a U.S cleaning. The board now comes on and the fan is spinning at...
Hi everyone,
I need some quick advice, please.
The MacBook came in with no power. Trackpad clicking and cycling. It has been opened before, presumably by the customer. The screen shield is missing for both the backlight and LVDS connector. There are no obvious shorts under the thermal camera...
Yes, it still shows the battery percentage after it stop to work.
Just realise that after it stop charging just by restarting the mac it starts to recognize the charger and charge again.
While it is charging.
Q5265 – 12.23V
Q5270 – SAVE_BAT_G - 5.60V
– SAVE_BAT_S - 4.91V...