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had some liquid damage. Some corroded caps all over the place. Replaced them all. Lid sensors have no corrosion. where could i measure. what could be the next step. i have no idea.

This is an interesiting Case: I2C lines are fine feedback is fine sense cuircuit had broken traces (to the shunt resistor) made those connections again the screen is working. I tested it on the backlight output i have 11.7V i have found out that if i measure r7702 on pin 2 (with a multimeter)...

Cpu gets around 80 degrees, but no cpu activity. Already flashed the EFI chip. 25khz Clock signal is present. What could be the issue here.. is the cpu dead

820-00850. The version with t2 chip and touchbar. the Device had some liquid damage. The LVDS connector on the Panel looks bad. Already swapped out the Screen, so its new. It looks like there is no corrosion the logicboard. L8504 was burnt. Already replaced that, but still no image. DP_INT_HTP...

Cpu voltage is present while the fans are spinning. i have already reflasshed the efi. still same. the board has neither liquid nor corrosion on it.

this one has 0 liquid in it. The logicboard looks perfectly fine. Could it. be currupt bios. PPBUS And all s5 rails are. present. sus also

We just opened three brand new macbooks and swapped the parts to see if it's replaceable, good news is that it seems to be!

This device had liquid damage. It did not turn on. I have changed U7000. One pin of the chip was "burned". After that the device did turn on. but only in smc bypass mode. if i try it to boot normally it show me battery low symbol. I have already tried a new battery. PPBUS_G3H with battery only...

First issue was, that it didnt turn on. Usual 5v stuff. After replacing u4700 and u7100 it turns on and works fine. It charges with no problem. But once i hook an Usb-c to USB3.0 adapter up and connect an extrenal drivee to it. It gets no power. My usb-c dongle has an usb-c power port. if i...

This device does turn on just fine with the battery connnected. Now if i connect the charger in one of the two ports it shows me 5.2V and 0amp. On the other one it doenst even show me a voltage. Without the battery connected it has 5.2V input and approx. 300ma of current consumption on both...

Is there a guide on how to disable the dedicated grapic chip on newer (4k / 5k) Imacs? for example 820-3299 has the same Gmux chip as the 15 inch retina macbooks. I believe its possible. has someone done this already?

820-3332 once had a short on Q8961. After replacing it it worked fine. But just for a while. Q8930 now has a short and it does not turn on. After replacing Q8930 and U8900 at the same time it had fans-in again. but no image :(. Did I fry the GPU? measuring it showed me that atleast it has no...

PPBUS_G3H = 12.6V PP3v3_G3H = 3.32V PP1V8_SLPS2R = 1.8V PP1V8_AWAKE = 1.8V PP1V1_SLPS2R = 1.1V PP0V8_SLPS2R = 0.8V PP3V3_AWAKE = 3.3V PP1V2_AWAKE = 1.2V PMU_PVDDMAIN_EN = 3.3V P3V3MAIN_PGOOD = 3.288V PP3V_G3H_RTC = 3.0V PCH_RTC_RESET_L = 3.0V P5VG3S_EN = 100mV PP5V_G3S = 0V the Device had...

Im currently working on an 820-01041 wich boost to 20v and draw approx. 1.7A. Fans spin up normal for around 10 seconds. then the fans do a burst and the Macbook restarts. It had minior liquid damage near j5100, u5104, . I have already tried: - Disconnecting everything except battery. (since it...

we have replaced U9300, the laptop is on and has picture, P1V8_COLD_SW0 and PP1V8_SSD_COLD have zero volts, when we give them power externally it consumes 1 Amp. is that right?

The board powers on fine but gets stuck with around 70% on the boot progress bar. The fans also gradually start spinning to a far higher RPM than normal. After a short while, it then simply reboots. Alt + D doesn't show any issues. Any ideas?

when i connect a charged battery it turns on and works perfectly, but adapter-sense has 0V, no green light and CHGR_AGATE_DIV is 16v, otherwise no power on any lines with a magsafe connected. PPDCIN_G3H is there.

What can it be? the SSD has power, but it's not seen, can't boot from external either because the USB C dock doesn't get any power from the board and doesn't turn on. any ideas?

Lately we are more frequently getting Macbooks with the following Problem: It only turns on when its cold and the battery is completly drained. works for a time. Shuts down at a random time and doesnt turn on.For the time after it "crashes" it gets hot. It does that until the battery gets low...

It restarts constantly... sometimes it does manage to boot and the usual first startup screen is visible. In the part where you can connect to a wifi network it tells that it has to do a critical update. after i connect it, it tries to install something but fails with the message: "an error has...