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no water damaged. guy in one of shops fitted screen with battery connected and short motherboard. PPBUS_S5_HS_COMPUTING_ISNS is only 8.4v

yes i have 3.3v on PP3V3_S5 and green light on charger

yes i have 3.3v on L7560

I have problem here. Board 820-3024-b no powering up. I have 8.4v on PPBUS_S5_HS_COMPUTING_ISNS not sure what to do next. any help?

is 820-3787 is close to 820-00138 board ? i have schematic and board view for that one

when i connect original charger 85w green light coming up then orange after so is charging. i have 12v and 3.4v on battery connector pins so charging is ok

is any similar board view from different board i can use?

am using bench power supply and is no working. also i opened brand new original charger 85w but no powering up at all. its strange because is not any liquid on main board. difficult for me to fix it if i dont have board view for it

Hi. I have here 820-00138-a board after water damaged on keyboard. i removed board and check under microscope but i can't see any water damaged on it (checked 3 times). Laptop no powering up when i connect charger. Somebody told me that board need to be connected to good battery is that true...

Hi guys. I have strange macbook here a1398 model. is have problem with display. Sometimes when i press power button i can hear sound but no picture. Today i done this same and is powering up and display no problem. I done all reset pram and smc but this problem is coming back sometimes. Any idea...

i done it many times. but is burning inside board m8. where hole is

i think we will not gona fix it. there is burn hole in board and can be shorted to layer bellow. i removed u6990, c6990, r6995, d6990 and i still have short on pin 4,7 on u6990 and c6990. i think it will go to scrap. but thanks any way for trying to help

Hi. I have board 820-2915-b and when i open it D6990 and R6990 was burned out. i replaced U6990, R6990, D6990 but now when i connect charger smoke coming out from R6990. Also i have short on U6990 pin 4 and pin 7. Anybody can help?

it was me region. laptop works . thanks arghhh for send me bios file :)

i just snd you pm . would be good if that will work. thanks very much

thanx for all info again m8. :)

ok. thats mean a lot. so is there any way to get original dump? its last question.i dont want to waist your time any more m8 :) thx for all information you provide. glad i know what isa all about now. i may keep it for parts

so if i will have this same board from 2015 820-00165 and read bios file and copy to my efi chip will that works?

I dont have original backup because someone b4 me try to fix himself and done to much mess with bios file so i has to clear efi and reprogram it again. my friend send me bios file with clean serial number but is no working.

Hi. Thank you for replay. I never wanted to touch efi chipset but i seen efi chip was removed and solder very bad way. When i got this laptop i press power button the fan spin for 3 second then stop. So i reprogram bios and now is powering up but loading bar going to half way and stop. Not...