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I'm sorry. C5220 2.7ohm C5260 2.7ohm

C5220 2.7 ohm across. I'm not sure what /60 refers to but I'm happy to provide more information if you could clarify

Battery disconnected PPBUS_AON is 11.98V

I'm definitively not the guy for writing the code for a project. I have some basic Arduino projects under my belt, however this is going to require something far more advanced to create. It just happens that the engineer's brother is a really talented programmer, and we all thought it would be...

I have a A2485 that got a tiny streak of liquid damage on the on the FETs for charging the battery. Q5232 and Q5233. (Picture provided) Q5233 - CHGR_GATE_Q2 appeared to be shorted to GND. 0.00 in Diode mode. I cleaned pin 1-4 with some flux and solder and that appeared to relieve the short. D...

I had the exact same conversation with my engineer friend some time ago. It would be amazing if somehow a mobo could be put in a jig and run/probe with boardview data. I offered my 3D printer for the project, but I doubt we will ever get anything done past the dreaming stage 😅

I have a water damaged 820-01700 that I managed to restore back to 20V with boot chime however there is no image and the L8504 inductor close by the screen is blown. I tried replacing it but without any luck. LCD cable also replaced. Boot sound, charger sound, key press to voice works so I'm...

Replacing the resistors restored voltages and I now have a booting device! I had already replaced the U7501 and measured DIODE mode up against OBDATA and everything checked out. I would never have been able to fix this board without your guidance. Thank you! 2informaticos!

Yes. 3V42_G3H 3.4V

Oh I see. I struggle to see when a signal is inbound or outbound on the schematics :S 3V3_S5 2.908V PP3V3_SUS 2.90V Seems like all voltages are slightly off.

Hi. I have a board with PM_SLP4 missing. PPVRTC_G3H is at 3V and not 3.3V Is this indicative of a dead CPU/PCH? Signal is coming from U0500. I'm not aware of any steps that comes before that. 18.5V 0.021A from PSU PPBUS_G3H 8.59V

Alright, hmmm. Should I maybe investigate components that use PPBUS_AON or the ones that are needed to create PPBU_AON? Chicken or egg situation. Tricky stuff. PPVDD_SOC_S1 has lower resistance to GND. (marked with red square at the top of this thread) Is this not a possible reason?

Black on GND and red on PPBUS_A ON : 0.501 RED on GND and Black on PPBUS_AON : OL

Turning it on and off fixed the problem. This one is fixed!

It worked! DFU recovery fixed the machine. The strange thing is that I already tried DFU after getting 20V on the charger. I tried a different USB-C cable (original mac charger USB-C) and now it worked. I used both schematics. 01041 and 01814. I honestly could not tell the difference. Thank...

Hi. Yes the fuse is fine. 0.01ohm resistance. I replaced it and even bridged it with copper wire just to try. The result is the same. Voltage drops to 1V after resoldering fuse.

Hi. I believe this one might be braindead, but I would like a professional opinion before putting it to rest. A1990 820-01827 Liquid damage around CD32 and U9580. Got 5V on charger. I reflowed CD3215 and U9580 and 20V was restored. Board draws .450a and T2 Chip gets slightly hot under...

Does 12.3V from ISL mean that the CD32 charging circuit is operational? Are the U8100 and U7700 the PMU BUCKS? PP3V8_AON 0.338 PPBUS_5VS2 0.505 PP5V_S2 0.256 PP3V3_S2 0.426 PP3V3_AON 0.500 PP1V8_AON...

What classifies as a secondary power rail? All rails that are derived from PPBUS_AON or a PPBUS_G3H equivalent?

12.295V on C5254 when fuse F5200 is removed. What does MLB stand for? edit: (NVM, Main Logic Board)