(347) 552-2258 help@rossmanngroup.com

Macbook 820-00165 Stuck at Green Light

Instafixx

Instafixx

Active member
MagSafe Stuck at Green Light.

PPBUS was at 8.19V

Reballed the SMC. PPBUS now at 8.6V but still stuck at green light.
Reballed U1950 as all pins were pulsing.
But still the same. Should I change U1950?
 
Instafixx

Instafixx

Active member
3v3_s5 comstantly pulsing between 0 to 3.3V every second.
3v3_sus between )v and 1.8V every second.
 
Instafixx

Instafixx

Active member
1 - 3.4V
2 - GND
3 - 3.4V
4 - 2.1 - 2.8V Pulsing
5 - 2.1 - 3V Pulsing
6 - 3.2v Pulsing
7 - 3.1v Pulsing
8 - 1.7 - 2.6v Pulsing
 
Instafixx

Instafixx

Active member
But SSD isn't recognized . SSD is fine - working on another board

U3740 Voltages.
Pin 1 is 3.4V
Pin 2 is 0.9V
Pin 3 is 3.4V
Pin 4 is 3.4V
Pin 5 is GND
Pin 6 is 3.2V
Pin 7 is 0V
Pin 8 is 0V

3V3_S0SW_SSD is 3.3V
 
Last edited:
Instafixx

Instafixx

Active member
I didn't go into disk utility.In this one sometimes I get the question mark sign and sometimes it gets stuck at the apple logo with the loading bar full.
On another board it boots up into the password screen
 
Instafixx

Instafixx

Active member
I replaced R3740 . Looked broken to me.
After replacement I switched on the just the board and display connected. I reached the login screen.
Now after installing everything . I hear the chime and then nothing. Not even the apple logo.
I tested again with just screen. Same - only chime and nothing.
 
Instafixx

Instafixx

Active member
The issue the machine is sometime booting up to password screen. Sometimes stuck after only chime. Sometimes stuck at apple logo with loading bard half full / 75% full or 100% full.

Once I got a black screen error message "Device restarted because of an issue"
 
You must log in or register to reply here.
Top