820-02987 MBP 2020 No charge.

[Mortentoft]

Hi’ good fellows…
I am new and apology my rookie questions. Do you need further info – let me know.
Macbook pro 820-01987 without drops or fluid damage - smooth and clean. The history of the device; sent in because it couldn’t charge anymore. Charges if you take the charger out and in many times. Takes 19.2 volts and boots normally to .0600-0.700 amp (without battery), shows logo but crashes. circles (.100-.500amp )around until... Ends after 40 sek. It stops at 0.053 amp. Can’t find a short – maybe a IC short? I want to hear if anyone knows of the boot row? it looks like the device is hitting something wrong through the boot process. Can anyone help me? I have a video of the bootprocess – I will try to post it here (not possible.

 

[2informaticos]

First of all, welcome to the forum!

You can't have a short on the board if get even image.

As always with T2 machines, start with DFU.
Try revive and go to restore, if no important data on SSD.
If need to recover data, check if you can access the SSD starting in Target Disk mode; before doing DFU restore.

Read below thread, for more information.

HOW TO collection

I hope this "How to" collection will help our members. I will possibly modify this post in time, if updates available. Trigger SMC_ONOFF_L (PMU_ONOFF_L): It reffers to simulate power button function, when the keyboard is not connected. We need to do this when we work with the board...

boards.rossmanngroup.com

 

[Mortentoft]

Thank you 2informaticos. I will try it tomorrow and let you know what happened. I do not need to recover anything so… DFU It will be

 

[Mortentoft]

Hello 2informaticos. Follow-up on my problem ... After DFU and reinstalling/bridge ... it works 100% again. Unbelievable that a device can not boot due to a T2 chip . Many thanks for your advice and help!

 

[2informaticos]

Glad to hear is solved now.
Thanks forsolution feedback; it helps a lot with such kind of weird problems...