820-00928 died after screen change stuck at 1,200mA [SOLVED]

[werickoliveira]

I have a machine 820-00928-a that had a broken display, and I replaced its screen with a used screen in good condition. I needed to format it, I went through the whole process and left it until it was finished, when I went to check the machine it no longer showed an image with any other screen, it turns on, however, there is no chime, and its consumption is around 1,200 mA, any tips on where start evaluating, taking into account that it was functional.

I have some skill with electronics and maintenance and I followed everything carefully with the process on this MacBook, but the failure occurred during the system installation.

 

[2informaticos]

First of all, welcome to the forum!

Try DFU restore...

 

[werickoliveira]

Thank you, my friend.

About DFU this machine is a 2017 I don't think it goes into DFU. I tried to do that, but I couldn't.

 

[2informaticos]

Sorry, I didn't get your model correctly.

Failing on update points to BIOS issue.
Try known good BIOS, cllean ME.

00928 clean ME.bin

drive.google.com

820-00928 outimage.bin

drive.google.com

Let me know if at least one is good...

 

[werickoliveira]

I'll try it today and get back to you, thanks.

 

[werickoliveira]

I came to give feedback, after re-recording the Bios chip the machine started working again. One more detail, the first rom you told me to clear had a password, so I tried to download another one and it worked. I'll share it here to help someone who needs it in the future.

Thank you very much for your help, the machine is working 100% again.

 

[werickoliveira]

820-00928 BIOS