Dell Chromebook 11 3189 (kefka) schematics

Support General Device Support
1

System Details

  • Device: kefka
  • OS: EndeavourOS
  • Firmware Type: UEFI Full ROM
  • Firmware Version: latest
  • Internal storage type: eMMC

Summary of the Issue

Hello to everyone!

I need help with a Dell Chromebook 11 3189 (kefka). Being unfamiliar with Dell’s proprietary chargers, I incorrectly assumed the center pin was positive and the outer ring was negative. I inadvertently sent 19.5V through the ID/1-Wire signal pin.

Now the laptop won’t charge anymore even with an original charger. I suspect an ESD protection diode might have blown since the pin is now shorted to ground but I can’t see any visible burns or damaged components on the motherboard.

Can somebody help me? A schematic would be enough, but the only ones I found were paid. Thanks in advance

Steps to Reproduce

  1. Plug in original charger

Expected Behavior

Battery should start charging

2

nobody here is going to have that