MBP 13inch 2018 No Power - 820-00850-07 motherboard faulty (U3100 get's hot)

[francescoranchi]

Hello everyone! I'm new to this forum but I hope I can find help and also help others at the same time!

I have a MacBook Pro 13inch from 2018 and it doesn't turn on anymore it's completely gone. I was using it connected to a USB-C / HDMI adapter to connect it to the tv when it just turned off and it's not powering on anymore.

I don't have an AMP meter so I can't see how many amps are getting pulled. The only symptom is the U3100 getting very hot, upon closer inspection it looks like it burned because there's a small hole on the top surface of the IC (I've already seen similar holes and they are typical of burned ICs), please see the picture!

Now the question is:

- Would the MacBook still turn on with battery power if I remove the U3100? or does the MacBook not turn on at all without it?

- What do you think about the "hole" on top of the U3100? would you agree with me saying that it is probably burned?

- What other things would you suggest I check to confirm the fault?

Main question is if the Macbook still turns on without U3100 (doesn't have to be fully functional, just fan spin would be nice)

Thanks for anyone that can help me!

--> The hole that I'm talking about in the U3100 is the one above the letter "C" on the top left of the IC.




IMAGE:
https://drive.google.com/file/d/1S3Q...w?usp=drivesdk

[mon2]

Re: MBP 13inch 2018 No Power - 820-00850-07 motherboard faulty (U3100 get's hot)

U3100 will need to be replaced due to internal damage of the part. It is probably acting like a short to prevent further boot. At the very least the part needs to be properly removed, pcb pads cleaned so they are not solder shorting. Then you can test with only a battery but then the battery will not be able to charge.