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the indicators are the same when pressing the original button! PCH_PWRBTN_L =3.3v then 0.086v then 0.002v PM_RSMRST_L=3.3v then 0v and does not remain high

I don't understand. Tell me what to check next? Nothing changes. The indicators are the same.

P1V1_VBST =5V is this normal?

when short-circuited to ground PMU_ONOFF_L voltage appears briefly: PCH_PWRBTN_L =3.3v then 0.086v then 0.002v PM_RSMRST_L=3.3v then 0v and does not remain high

PM_PWRBTN_L do you mean PCH_PWRBTN_L ? There is no PM_PWRBTN_L line on this board. voltage 3.3v appears on lines PM_RSMRST_L, PCH_PWRBTN_L only when switching PMU_ONOFF_L

PP3V3_G3S=3,38v PP5V_G3S=5.14v PP1V8_G3S=1.8v PMU_ONOFF_L=3.38v at the moment of power connection the line PM_PWRBTN_L = 0.250V and drops to 0.002V

(board on table) CPU/PCH Rails have no power and are at 0 volts

replacing U9801 didn't help. when connecting an external display I don't have any indication on it about the connection. I suspect that the problem is in the GPU... although the touchbar has an image

this is exactly what I did when I found myself at a dead end and decided to write to you. I compared everything with the same board and the readings are almost identical. both in resistance mode and in diode mode. the initial problem was in the blown up C6700 due to a faulty trackpad. and high...

the macbook has not been used for a long time, which is why the battery has swollen and the mac did not charge and did not work. I replaced the battery, it started charging but did not turn on. I checked if it was in DFU and it was in recovery! It recovered without errors but does not show any...

L7030=11,93v L7660=3.38v L7600=5v L8410=0 L3500_VXT=0 L3500_VWR=0 L8100=0 L9030=1.8v L9020=0.9v L9080=2.5v L6900=3.38v

I can say with certainty that the problem is not with the U9850. I replaced it twice with new ones, it has no effect at all and everything is the same. It seems to me that I have absolutely no power supply to the GPU. I have absolutely no voltage around the Ua000. Perhaps the problem is with the...

pulsation has a few seconds only EDP_PANEL_PWR_EN = 0.013v then zero I'll replace the U9850 now

L7030=0.472 L7660=0.413 L7600=0.398 L8410=0.791 L3500_VXT=0.468 L3500_VWR=0.465 L8100=0.038 L7210=0.053 L7220=0.054 L7230=0.054 L9030=0.320 L9020=0.298 L9080=0.381 L6900=0.348

EDP_PANEL_PWR_EN =0v (diodmod=0,499 ) (0.42 kohm) EDP_PANEL_PWR_DLY_EN=0v(dm=0,638) (0.478 mohm) 3V3V_S0SW_LCD=0.457 (0.382mohm) 5V_S0SW_LCD=0.538 (4 mohm)

The MacBook does not boot. It is restored via DFU without errors. The MacBook charges and consumes 20V/2A. without battery the board consumes 20v\0.233a The caps lock does not light up, but the touchpad clicks. The fans do not rotate. No signs of life PPBUS_G3H=12v PP3V3_G3H=3.38v

sorry , yeah pin3 3V3V_S0SW_LCD=0 5V_S0SW_LCD=0

J8500 pin1=0.421 pin2=0.421 Of course I checked the connection to an external monitor with and without the LCD connected, as well as both aux outputs on the J8500

after replacing U8110, U3500, UB700, the 5V_G3S resistance dropped to 0.766 com. the MacBook turns on and charges! the touchbar, keyboard backlight, etc. work, but there is no picture on either the external or internal display (I put the board in another case with a tested display, nothing changed)

I removed both ISL95870H on this line and I still have 11 ohm resistance on 5V_G3S