Thanks for replying.
I read somewhere that this could be due to cracked / dry solder joints under the SoC. I tried to heat it up a bit for testing and laptop did power up ( both CPU and GPU getting hot ) but no display.
Maybe it just needs reflowing. I will try and let you know when I get to that....

Hi [USER="513776"]ukpicasdo[/USER],

I have the same laptop with same issue.
Did you get a fix for this?ukpicasdoHi [USER="513776"]ukpicasdo[/USER],

I have the same laptop with same issue.
Did you get a fix for this?

Yes, I am have tried with known good battery and using a 140W USB-C charger that works fine with same model board.

I tried checking voltages as on this [url]https://repair.wiki/w/Apple_T2_platform#/media/File:Power_sequence_ver_5.png[/url] and PCH_RTC_RESET_L is High at 3.0v (expect it to be low) and PMU_CLK32K_PCH is 0.8v
As per the oducment PCH_RTC_RESET_L should go to Low when BridgeOS boots. That seems to be my problem.

I will try to check the inductors too.https://Yes, I am have tried with kn...fine with same...

[B]PPBUS_G3H[/B] = 12.60v

USB-C meter - 20.26v 0.06-0.07a

[B]ALL_SYS_PWRGD[/B]​ = 0v[B]PPBUS_G3H[/B] = 12.60v

USB-C meter - 20.26v 0.06-0.07a

[B]ALL_SYS_PWRGD[/B]​ = 0v[B]PPBUS_G3H[/B] = 12.60v

USB-C meter - 20.26v 0.06-0.07a

[B]ALL_SYS_PWRGD[/B]​ = 0v[B]PPBUS_G3H[/B] = 12.60v

USB-C meter - 20.26v 0.06-0.07a

[B]ALL_SYS_PWRGD[/B]​ = 0v...

Hi all,

I am trying to fix a T2 Macbook A2141 820-01700 board that's stuck in DFU mode.

The SSDs have correct voltages

PP2V5_NAND_SSD0 = 2.5V
PP2V5_NAND_SSD1 = 2.5V

PP0V9_SSD0 and PP0V9_SSD 1 = 0.9V

PP1V8_SSD0 and PP1V8_SSD1 = 1.8V

I can force the laptop to DFU mode using the SOC_FORCE_DFU using SWK003. Apple Configurator 2 tries to restore the Mac but it fails back to RECOVERY.

Looking at the diagram here - [url]https://repair.wiki/w/Apple_T2_platform[/url] Step 6, it says the problem could be loading...