For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
Subscribe Now

820-00850 5v, no power

Thread starter iremont
Start date Aug 24, 2022

iremont

Member

#1

Hey guys, board is clean, no corrosion, board stuck every 4 ports 5.07 and 10ma. ppbus is 1v ? where to start.

2informaticos

Administrator

Staff member

#2

Check diode mode to ground at PPBUS_G3H first.
R7020 gets 5V?
If yes, porst U7000 basic voltages.

iremont

Member

#3

R7020 gets 19.9v, and now got board to 20v and ppbus jumping 12.3-12.64 board, and no boot, no cpu acitivity

iremont

Member

#4

With thermal cam, t2 blinking

2informaticos

Administrator

Staff member

#5

AWAKE and SLPS2R voltages are stable?
Check what happens connecting both charger and battery.

You must log in or register to reply here.

Share:

Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Link