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I was trying to get some specific video about the MOSFET open and close but i am not coming across a good clear one do you happen to have any good ones that i can go to ? Thank you very much .

I was trying to get some specific video about the MOSFET open and close but i am not coming across a good clear one do you happen to have any good ones that i can go to ? Thank you very much .

ok , i will watch one of the videos to see and will follow up with you.

When I check R7030 and R7040 Pin in ohm , both resistors are giving me the same value 0.4 ohm and The MOSFETs comparing to a known good working board they are giving me the same reading as the good board.

Ah ok , but for the MOSFETs , I did check their pins , I will check the value of the resistors in ohm , I can also review the MOSFETs again .

Here s what I got when I checked those components Q7030 TBA_GATE_Q2 = 0.426 OHMS and 0.00V PPDCIN_G3H_CHGR = 0.527 OHMS AND 20.22V TBA_GATE_Q1 = 0.792OHMS and 0.011V TBA_LX1 = 0.378 0HMS and 0.009V TBA_PHASE1 = 0.378OHMS and 0.008V R7030 TBA_BOOT1_RC = 0.553 OHMS and 4.75V TBA_BOOT1 =...

After removing F7000 and check C7050 Voltage = 0.02V

Right , I will definitely use the pdf sheet from now on , Now here's what I found at CHR_A/BMON very unstable voltages , CHR_AMON = 0.016 Then dropped to 0,011V CHR_BMON = 0.083V then dropped to 0.0V

Any update for me ?

Here are the basic voltages of U7000 P_IN = 20.30V AUX_DET = 4.8V VDDA = 5.07 V VDDP = 5.07V AUX_OK.= 3.375V CHR_A/BMON,? I could not find any related components connected to those power rails since they are output ,Would you please give me any referral of any components connected to those...

PPBUS_G3H = 0.908V PPBUS-G3H in diode mode = 0.408 ohms

Sorry I Have made a mistake regarding the 3V3_G3H , this power rail is ok i am getting the 3.73V when USB -C is connected and also getting 20V at R7020 with battery disconnected but still PPBUS_G3H is not present.

This Macbook A1708 A820-00840 Came in today customer stated that some water spilled on it , it was working then suddenly shut down. So I inspected the board and found no water damaged wheresoever on the board , as I connected amp meter i am getting 20v but nothing else , I proceeded get the...

Thank you for the informations , i have tried to to get the device in DFU but was not succeded , i wanted to add a short preview video to show you the reaction on the AMP meter , i have added a clear picture . Thats where the device stuck on .

No, I have not yet tried the DFU mode , Would you please provide me with the combination keys to get it into DFU mode ? Thank you . I will also review the resistors to see if any of them is corroded.

Ok , does that mean that CPU is my issue , also according to your experience should i review other areas for more corrosion ? Thank you very much .

any suggestion?

L7210 is giving me 0.847 V on both sides.

correct my mistake my board is 820-01987, I have not tried DFU mode yet , I spotted some corroded areas including the fan connector was gone and i rebuilt it , but all the other places were fine and no shorts found, but i realize that CPU gets hot .

This Mabook Macbook A2289 820-01897-06 M1 came in dead after severe water damaged , when Connect my amp meter I can see that my 20v DC is ok and pulling 11Watts and 10.5 amps and stuck there , Fan spins but no boot , Can i please get some help ? Thank you very much .