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Hi, I have been asked to replace a broken LCD on this Macbook. I did several screen replacement on older Macbooks, but never on one from 2020. My question: on these models, are the screens "paired", and there is a need to update a software after the replacement, or is it enough to unscrew and...

Ok, last question: can I try to replace U2890 with the same chip from a spare 820-3787 board, also with 2 display ports?

Ok. Can I try to replace U2890 with the same chip from a spare 820-3787 board, also with 2 display ports? Do you have a dump for this chip?

TBT_POC_RESET_L = 3.3V TBT_PWR_ON_POC_RST_L = 3.3V Can I try to replace with U2890 from a spare 820-3787 board, also with 2 display ports? Do you have a dump for this chip? I can flash with the same tool I use for SPI ROM/BIOS, correct?

Here are the voltages on U2800: PP1V05_TBTRDV = 1.01V PP1V05_TBT = 1.01V P1V05TBT_SW = 0.95V PP1V05_TBTCIO = 1.00V PP3V3_S4_TBT = 3.3V PP3V3_S4_TBT_F = 3.3V PP3V3_TBTLC = 3.3V PP3V3_TBTRDV = 3.3V TBT_EN_CIO_PWR_L = 0V TBT_PWR_REQ_L = 0V Seems ok. I have these values with or without cable connected

Hi, I have few trackpads from Macbook Air 2013-2017, some clicking but no pointer moving, other without reaction. They are not apparently water-damaged. Is there any way to repair them? Any board view available? Or better to forget about repairing them?

Indeed it is not frozen anymore with another good BIOS, keyboard is now responsive and SSD is detected. I don't have a BIOS with clean ME, do you have one available?

PP15V_TBT = 0V, with or without cable connected In diode mode, I have 0.56V on C3315 PPVIN_SW_TBTBST = 0V TBT_A_HV_EN = 0V, with or without cable connected also, TBT_B_HV_EN = 0V, with or without cable connected Port A: On C3286: PP3V3_S4_TBTAPWR =3.3V On C3211: PP3V3RHV_S4_TBTAPWR =3.3V Port...

Any idea to try to solve this issue?

Hi, This board chime and I see the blinking folder. Internal SSD is not detected, I tried 2 different, with Big Sur and Yosemite. External SSD is not detected either, tried with 2 different I am unable to do a PRAM reset, neither from internal keyboard or external keyboard, even with internal...

So, for what I have checked also with another board, there is no blinking folder possible on HDMI. For this board HDMI is working, within OS X With display port connected on A: TBT_A_HPD = 3.3V DP_TBTPA_HPD =3.3V

HDMI is not able to display the blinking folder, correct? I should test from OS X?

Thank you for the schematic. Sound is present, indeed a trace was broken on a test point for PP3V42_G3H_ONEWIRE Nice repair! thanks

Hi, On this board I replaced the LCD connector and the LCD (from China). Apple test (D key) says no problem; ASD EFI 3S156 is fully passed; ASD OS 3S156 shows the attached error. ALS, camera, work fine. What can provoke this issue? I checked again the LCD connector, all pins look good

Hi, This board had few small spots of water damage, I repaired them, and now I have chime, orange light on charger, but no display on mini display port. Internal display is ok, blinking folder. R5350 and R5351 are ok, 2 kohm, voltage on all their pins is 3.4V PP3V3RHV_S4_TBTBPWR_F = 3.3V...

Hi, This I/O board for Macbook Air is powering the board properly, but no green or orange light appears. Is there any schematic available for it? I cannot find one on internet. Or any clue what to look at?

Hi, My scope can save waves to csv, but not directly in jpg. I would like to view back these waves in Windows to put them in documents, so in jpg for example. I tried Wave Editor, but it seems limited to 2048 samples and is also globally very limited. TTScope does not accept csv files. Any idea...

Diode mode shows 0.48V. It was U7000 not well soldered, after resoldering I get PPBUS_G3H=12.3V and the board starts. To know the end of this story I removed SMC, and finally got 3.4V on SDA/SCL lines. Replaced SMC with fresh solder, and it keeps 3.4V on SDA/SCL lines, PPBUS_G3H=12.6V. And...

Removed D6950: same story Then I first simply heat SMC, and I finally got 3.4V on SCL/SDA lines. Voltage went back to 0V on SDA line and around 1.5V on SCL line after total cooling down, so now assuming an SMC issue. For the moment I don't have another SMC for this board, So I would like to...

Yes, the value of 0V is the same, with or without battery connected