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I built some cooling with access to u9850 and I get the same results with the connected display DP_INT_HPD =3.3v LCD_MUX_SEL=0.004v PPVIN_SW_LCDBKLT_SW=0.018v and does not switch to 55v

Do you mean J8500 (MLB) wasn't affected?- yes! DP_INT_HPD comes high? -Should I take measurements with or without a connected display?

I don’t know if you noticed it or not, but the U9850 chips are different, taken from the A1707 donor board. According to the scheme, they seem to be interchangeable. Or I'm wrong?

No . I checked the display from the A2141 with the A1707 motherboard and the A2141 display has a backlight and an apple (hence the display works). EDP_INT_AUX_N=0,412 EDP_INT_AUX_P=0,428 These readings do not coincide with the Openboarddata , but they coincide with the readings of an...

This is a standard error when jumping between updates of the old and new systems. This is usually corrected by installing the original system (usually Sierra) via Internet recovery (command + r). then install all the updates that the system offers, ultimately it will update all transitional...

replaced J8500 with t-con LCD, not on the MOTHERBOARD! cable is new! I checked the LCD on a MacBook A1707 as written on Logiwiki (2019-2020 A2141 Macbook Pro 16" display should work on all similar logicboards but you need to use A1707 EDP cable since 820-001700 only uses i2c line to control the...

Hello again, I'm back! Some liquid got onto the 8500 connector, causing a short circuit on the EDP_INT_AUX_N and PPVOUT_S0_LCDBKLT lines. MacBook works with external display! help me please ! U9850 has been replaced.

what is better to buy JCID P15 or JCID P13?

820-01827 Unfortunately, I couldn’t find the same board even on eBay! This is something unreal! So I'm looking for a solution! Unfortunately, I don’t have a JCID P13 (What other analogues are there besides JCID P13?). I have one with the same bga 820-0850. When restoring the dfu, the system will...

I suspect that the SSD has failed! Please help me figure out how to replace the SSD! Is it necessary to have an SSD only from a similar board or can you take, say, 01041? only on 01041 there are 4 ssds and on this board there are 6 of them! I am also interested in whether it is necessary to...

I fixed the short circuit PPBUS_G3H (С9573) and the MacBook came to life! no picture! according to consumption 20V and 0.280 then consumption drops 0.120-0.000 and the load goes to 0.789 and then 0.000 reboot again!

As far as I understand, it doesn’t exist yet even in Paul Daniels? :eek:

or tell me which one I can use?

Please share the diagram and boardview for this model. I can't figure out where the short circuit is

replaced PCH but still no picture

Only the bottom part of the board was damaged by the liquid, but I reball all the chips except PCH!

PPVCC_S0_CPU=1.115V PP1V8_GPU=1.8V PP1V8_S0_GPU1.82V PP3V3_S0_GPU=3.3V

I removed the BIOS chip from another similar board and no changes! PLT_RESET_L=3.3v.

PM_PWRBTN_L in diode mode 0.020 I applied 1 volt to it! then I measured it in deode mode again and the indicator changed to 0.580. I assembled the MacBook and the system turns on but there is no picture and caps lock does not work! The touchpad clicks, the fans are spinning! The power button...

PM_PWRBTN_L=0.075V, trigger SMC_ONOFF_L=PM_PWRBTN_L=0.065V