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Ok not the battery is causing the "short" - only happends when the audio board is connected. PPBUS_AON (with audio board connected) = 8.1V / Diode mode says "OL" (measured while turned off - not connected to charger/battery) PPBUS_AON (without audio board connected) = 12.26V I think I will...

- PP1V2_S2 = Missing / 0.336 - PP3V3_S2_UPC = Missing / 0.447 Clicking noise is coming from "Q5800" - When I connect the battery and USB-C cable (for charging) the values are 5V / 0.36A - Q5800 is getting hot. I have already replaced it - no short on PPBUS_AON after doing the same (battery...

- MPMU_VREF_ADC = Missing / 0.559 Which LDOs are missing? I can't find any LDOs (without NC) - could you please help me out. (im on page 34)

Board looks clean and the previous owner told me he that he close the MacBook and on the next day it stopped working. (no boot) - PP5v_S2 = 0.287 - PP3v3_S2_UPC = 0.447 - PP1v25_S2 = 0.268 - PP1V8_S2 = 0.330 I have checked the following: - PP1V4_LDO_PREREG = Missing / 0.291 -...

Hi, I have an A2337 (820-02016) with 5V and 0.02-4 A on both USB-C ports. - PPBUS_AON = 11.80-12.25V - PP3v8_AON_VDDMAIN = 3.8V - PP5v_S2 = Missing - PP3v3_S2_UPC = Missing - PP1v25_S2 = Missing - PP1V8_S2 = Missing - PP3v3_UPC0_LDO = 3.3V - PP1v5_UPC0_LDO_CORE = 1.5V - PP3v3_UPC1_LDO = 3.3V -...

Reflow of the J5100 solved the issue - thanks for your help.

TB is now working. After reconnecting the flex all (TB, camera and ALS) is working again - what the hell? Edit: Sometimes it’s working sometimes not. Edit2: ALS and camera is always working - TB is now dark again.

Ok, what about the ALS issue? (display brightness is not adjusting)

J5100: - PIN1 "TP_DFR_TOUCH_PANEL_DETECT" : 1.8V - PIN2 "DFR_LID_OPEN_L" : 1.4V - PIN18 "DFR_TOUCH_RESET_L" : 0.04V J5110: - PIN10 "DFR_DISP_INT" : 0.0V - PIN12 "DFR_DISP_RESET_L" : 1.8V Update: I have compared the values (to a known good board / different model) - same behavior. I also...

thanks for confirmation.

Hi, I have here an A1989 (820-00850) with a water damage on J8500 between PIN 1 , 3 and 43. Note: EDP_INT_AUX_N is shorted to ground - so I guess the onboard GPU got fried by the backlight circuit (PPVOUT_S0_LCDBKLT), right? I was able to restore the device via AC2 - no issue. But im not...

I will do. The following PINs were affected: - PP5V_G3S_DFR_FILT - PP1V8_SLPS2RSW_DFR

J5100: - PIN1 "TP_DFR_TOUCH_PANEL_DETECT" : 1.8V - PIN2 "DFR_LID_OPEN_L" : 1.4V - PIN18 "DFR_TOUCH_RESET_L" : 0.04V J5110: - PIN10 "DFR_DISP_INT" : 0.0V - PIN12 "DFR_DISP_RESET_L" : 1.8V (with touchbar and trackpad connected)

J5100: - PIN1 "TP_DFR_TOUCH_PANEL_DETECT" : 0.03V | O.L. (no touchbar connected) - PIN2 "DFR_LID_OPEN_L" : 0.0V | O.L. (no trackpad connected) - PIN18 "DFR_TOUCH_RESET_L" : 0.05V | 0.466 (no touchbar connected) J5110: - PIN10 "DFR_DISP_INT" : 0.0V | 0.470 (no touchbar connected) - PIN12...

Hi, I have here an A1990 - Touchbar doesnt work. (no signs of life) Note: J5100 was corroded - cleaned it and removed the corrosion. (Flexcable was fine) J5100 power lines: - PP1V8_SLPS2RSW_DFR: 1.8V - PP5V_G3S_DFR_FILT: 5.1V J5110 power lines: - PP1V8_SLPS2RSW_DFR: 1.8V - PP3V3_G3HSW_DFR...

I have already removed a good known "T2-chip" (from another donor board) but now I have some struggles with reballing it. (Note: I have a stencil and I use soldering paste) Issue: When I press to hard on the stencil it moves etc. and also the heat kinda "deforms" it. (Stencil...

I don’t have a good board :/ Regarding to the “wiki” it says that “Error 4014” means bad T2 RAM or battery. In case the RAM is bad, can it be replaced by a good one? So is the RAM serialized with T2 CPU? (CPU and RAM are “sandwiched” right?) https://logi.wiki/index.php/DFU_Mode_Restore_(Macs)

Yeah tried both - How to check if the T2 or SSD is affected?

Tried the old one again, same behavior as before. (So I need to enter manually DFU and so on.) Edit:

Already tried that but sadly its entering DFU again and restore always ends with the message above. The ".BIN" should work, right? Or is there anything I missed? Before the reflashing it wasn't 24/7 in DFU. Edit: Also strange is that when the MB is assembled it stays on "4.97V/0.00-0.01A"...