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PM_PWRBTN_L I have 3.5v and there is no drop there.

I do have 3.4v but R7837 PMIC_EN3V3SW is 0v

PPBUS_PMIC 12.6v PP5V_PMICLDO 5.1v PP3V3_PMICLDO 3.3v VINLDO3 12.6v P1V8SUS_SW 1.8v

I have 20v on charger and no problem there U7650 pin 4 P5VS4_EN_RCD is 0v diode mode 510, and of course PP5v_S4 is 0v PM_SLP_S5_L R1230 0v diode mode 510 May i have some advices please.

Just as a history of the board, it seems that the board has been in another store before me and they have applied head on T2 chip U3900. I,m wondering if it got some problem there!

No, i found no sign of liquid.

I do not have L9520/30/80 on the board

Thanks for your answer L9020, L9030, L9080 all of them are just 0v. L9080/81 reads 100 on diode mode, i compared them to another board and they should read 376. I got to replace U9080 but it is still not working and same result

Could you please write the name of the rails. pne friend told me that the T2 circuit that have problem, but which rails should I check?

Hello I have got A1990 that not starting, and was stuck on 5v, and i had no PPBUS_G3H, i got to replace the U7000 and now i have PPBUS_G3H. I can take the computer to DFU mode but the restoring can not finish its job. By the way i have 20v right now. I measured some more and find out that...

Hi guys I got this Mac and after cleaning, when i connect the USBc charger it works fully with no problem, but if the computer go to safe mode, after that i see nothing at the screen. I found out when i connect the charger to the computer after i want to safe mode the screen comes with no...

I tested to connect the board to adapter with out the u9080, the area around u9080 get warm. And PP2V5_NAND_SSD0 and, PP1V8_SSD0 is shorted to the ground. I,m wondering if the NANAs are dead by now or not! any way i can test the if the NANDs are dead or not,? BTW the NANDs get warm too.

Just a question, can the board starts with out soldering back U8090? Like if it starts but not find the SSD? Is it possible?

I found out that the board has got a little liquid damage under U9080, and u9080 is broken, i desoldered it from the board and the short is gone, and i have 19V. I replaced it with another one from a donor board, but when i soldered it on the board, the short came back. I see that the pins on...

I took of the f7000 and f7001, The pin 2 is shorted to th ground. If you mean L7030 it reads 300, before and after i took of the f7000, f7001.

It is like an open line, it reads 004

Hi I got a A1990 820-01814-A that is stocked on 5v i measured some points and it is like this. PPBUS_G3H is 0v PP20V_USBC_TA _Vbus 5v PPDCIN_G3H 5v I got to replace ISL9240 but it is the same. Please some help.

I triggered 5 v but got 0 v on PM_PWRBTN_L

SMC_ONOFF_L 3.4v PM_PWRBTN_L 3.3v PM_RSMRST_L 3.3v What voltage should i trigger 3.4v?

I using an original 87W charger and tried to connect both batteri and charger , but no boot. I,m not sure what do you mean by if not PCH doesn't start power on sequence. where the PM_BATLOW_L start från, i could not really find out what component turn it on.