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macbook in dfu state. 5v/0.043A. all 4 ports readings are the same with or without battery connected. when trying to restore, different errors appear. 10, 1014, 9, etc. PPBUS_G3H= 12.34v

I bought the same chip. But I encountered a problem with reballing. Tell me what I'm doing wrong that sometimes the balls don't form as they should? Bottom heating 240C, top 320C, I pour flux well. And the result is this.

When turning on the MacBook, another sensor also flashes several times. Then the MacBook boots up but the touchbar does not work correctly.

When turned on, the touchbar flashes several times. Apparently, the touchbar interferes with loading, I thought and transferred the motherboard to a test MacBook of the same model. The MacBook recovered and works normally except for the constantly glowing touchbar backlight.

The inside of the MacBook looks perfect. But when you try to install the OS, the MacBook reboots! I tried to restore it via DFU, but the result is the same. The MacBook works until you try to install the OS!

of course no one recommends! but judging from the diagram at least for testing they are interchangeable, but I seemed to have a problem with correct charging ...

and if you return the old battery, what are the readings? the one with 2.2 V

try connecting only the battery, display and USB port and check if it will start? (without the power button, trackpad and keyboard)

and what is the consumption with the battery connected?

all 4 ports are identical ?0.000A?

What kind of USB meter are you using?

How do you determine if the board is loading if it is on the table and only connected to a USB meter?

0 volts seems to be blocked battery. 2.2 volts is working but you don't need to connect battery for testing.

What is the USB meter reading? (20 В / 0,800 А)? 20 volts power supply and in terms of amperes it is clear what is happening

if you take the board out of the macbook and connect it to the table, does it boot up via USB meter? with a 96 watt charger, it should work without a battery!

have you tried resetting PRAM and SMC?

I compared the resistors from page 116, they are all the same on both boards! VRAM chips have the same markings! but the boards have different amounts of RAM, 64 and 32 GB

Thanks, it helped me too.

The MacBook charges and turns on until the Apple logo appears and then reboots! What could be the problem?