Re: 820-3115-B Short ot GND

Sry by mosfet i meant the two inrush limitting ones feeding u7000

Re: 820-3115-B Short ot GND

Thank you all for the replies.

Tonight all will be solved.

I have measured the mosfets and they are good.

Two possibilities left :

1. Internal board short.
2. Q5490 to have internally shorted that's a complimentary p channel n channel fet

I will write more tonight.

Cheerio

Good Morning dear colleagues,

I have a board with a bad short to gnd on pp18v5_conn after the fuse.

I have pp3v42 rail when battery is connected, but before clearing the short i don't believe i will have PPDCIN_S5_CHGR from the charger. U7000 is good and D7005 is good.Which indicates short might be internal??

No visible water damage on the board. Laptop is working perfectly on battery power so i assume CPU, GPU Keyboard are Ok.

Anyone had a similar issue please advise?
Thank you in advance.

Re: need board view for Apple A1278

Hi all.

Thanks for the schematics and the board views very helpfull.