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Ok. It may sound stupid or I'm being stupid, but I was measuring short to ground in Ohms by setting my multimeter to OHMS and black probe to ground and red probe on the L9580 - P2V5_SW1_TPS62180_SSD0.
Before it was showing 4.7ohms.
Now it keeps increasing till reach 20.2K.
In diode mode
L9580...
Hi guys.
I need help, please. Need data on this.
Trying to fix this MacBook Pro (16-inch, 2019), but no success.
Customer stated that before it dies was boot looping and sometimes stuck on Apple logo.
With battery, it draws 20V and 2.5A. Without 20V 0.07A.
Trackpad clicking, no display.
On Apple...
Checking RAM and CPU voltage because I'm still leaning which lines come first.
So, I rather give all information beforehand.
PP3V3_S5 - 3.34V
Using 60W original MagSafe 2 charger
Hi everyone.
This MacBook had liquid damage about 10 months ago.
I've replaced a few components and done U.S cleaning and it is back to life.
So, now it is back to me with no power: TrackPad clicking and a loud fan.
After opening, I found a blown UC710 (SN621371) that I only found the...
This skipped from my measurements.
I removed L7630, and it measures very low resistance to ground on PP1V05_S0_REG_R.
--------------------------------------
L7630 removed.
In diode mode
PP1V05_S0_REG_R - 0.017
P1V05S0_LL - 0.177
---------------------------------------
PP1V05_S0_REG_R - 0.13Ω...
I've missed this PP5V_S0 shorted to ground.
Basically all CPU phases mosfets, U7701, U7400 and a few more components that get PP5V_S0 is dead.
Applying 1V on PP3V3_S5 Chipset U1100 gets hot.
I guess this is beyond repair, as I don't have the right tools to replace the chipset.
Thanks for your help.
Powering the board without battery PPBUS_G3H goes to 8.59V
With battery fan spinning and PPBUS_G3H goes to 7.89V.
ALL_SYS_PWRGD - 3.32V
VCORE - 1.74V
U1950
Pin 1 - 3.32V
Pin 2 - 3.32V
Pin 3 - 3.42V
Pin 4 - GND
Pin 5 - 3.42V
Pin 6 - 3.42V
Pin 7 -3.42V
All resistors from SPI is ok.
I replaced...
PIN 40 on Thunderbolt port is related to the line PP3V3RHV_S4_TBTAPWR_F this is 0V at the moment.
L7560 - PP3V3_S5 - pulsing
L7430 - PP1V35_S3 - pulsing between 0.10V to 0.15V
L7195 - P5V1_SW - 5.51V steady
L7130 - CHGR_PHASE - 12.55V steady
All the other coils has 0V
Hi everyone.
Dealing with this board that does not display, but fan is spinning, battery is dead. Battery replaced, same issue.
It had battery replaced a few months ago.
It will sometimes not power on and missing PP5V_S0.
99% of the time when it's on and no display, it will have all the...
Hi everyone.
I need help, please.
This mac came as no power after battery run out.
Opened and found a little corrosion on the board due to humidity and dust.
All cleaned, and I found C9327 0 PPVIN_S5_HS_GPU_ISNS shorted to ground, so CAP replaced, and then I found U8001 shorting PP5V_S5 to...