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.
A new contender. 5v and ~30mA on the charger. PBUS is pulsing regularly at about 1hz. Sounds like a short somewhere? PP1V8_SLPS2R is trying to turn on but failing (only going up to about 0.1V it looks like). The rail is about 2ohms to ground. Is this too low? Injected a bit of current...
This is a very long shot--bear with me--I have an a1990 that I believe the T2 is fine on. Can I replace the A2141's T2 with the one from the a1990? Ignoring the complexity of the BGA work--would it work?
True. Bad habit!
I have tried DFU steps many times. Will it enter DFU mode even if NO current is being drawn? Does the battery have to be connected, and BMU cable?
Is the keyboard bad? Is the T2 itself bad? Can this be replaced, or is that foolish?
Thank you! I have been a lurker for several years just reading all that I can, but I'm starting to have newer machines that elude me.
No history for this computer. Under the scope when I got it it looked very clean, no traces of corrosion anywhere that I could see.
UPC_PMU_RESET is 0V without...
I have a 2019 16" MBP (820-01700-5) that will not power on. 20V 0A. T2 is not booting and is not recognized by Configurator 2 in normal or jumpered DFU mode. I strongly suspect a short, but cannot find one.
PPBUS_G3H - 12.3V
PP3v3_G3H_RTC - 3.3V
PP3V3_G3H - 3.3V
PP1V8_SLP2R - 1.8V