Re: Macbook pro 13'' A2338 late 2020 stuck at 5V

Thanks alot for the information and help!

It's going to be a challange. As I was measuring, CC333 just crumbled to dust. RC327 seems fine. I do have to check if the removal of RC327 clears the short on the caps. Bulkcaps CC335 and CC334 measure 4 Ohms. I reflowed UC300, didnt remove the short on CC331. I say short but I measure 4 Ohms over CC331.

I'll get back to you shortly!





To get back to your first few questions:
F5200 measures 12v both before and after...

Re: Macbook pro 13'' A2338 late 2020 stuck at 5V

Thanks for the quick answer!

I measured 5V1 on F5200 both after and before the fuse.

CC331, C7742-C7746 al measure 4 ohms to ground. I guess there are many more shorts in this circuit. Allthough the damage is nearly invisble I hope U7700 is still healthy.
I'll try and look for a short around U7700. Same for UC300.

Hi,

I bought a waterdamaged macbook pro A2338 , late 2020 EMC 3578, its stuck at 5V 0,06mA.
The 3V8 (U5700) chip is shorted out, atleast the PPBUS_VMAIN_VIN_ISNS Cap is and a bunch of resistors. It also seems that a resistor is missing. Does anyone have a boardview to tell me wich resistor goes where arround the U5700?

And for the macbook to boot it requiers 20V am I right? Wich chip tells the charger that it is a Macbook and not a phone?

Thank you so much!...

Re: Macbook pro a2338

Anyone knows what ic this is? the 86422