Macbook A1502 820-4924 Dead

Instafixx

Active member

Tuesday at 9:17 AM

• #1

PPBUS at 12.23
ADAPTER_SENSE is 3.3V
3v42_G3H is present
SMC_RESET_L is 3.4V as well.

No Magsafe light.

Its drawing only 10-15 Amps

 

Last edited: Tuesday at 11:36 AM

2informaticos

Administrator

Staff member

Tuesday at 12:17 PM

• #2

Did you try known good DC board?

 

Instafixx

Active member

Tuesday at 12:24 PM

• #3

I saw the SMC was reflowd. So i reflowed it properly just in case.
I then replaced the DC board.
No Magsafe on Adapter.

Drawing 10-15 Amps on the PSU

 

2informaticos

Administrator

Staff member

Tuesday at 8:47 PM

• #4

AVREF_SMC is good?
Test if starts in SMC bypass.

 

Instafixx

Active member

Wednesday at 2:45 PM

• #5

AVREF_SMC is 3.2V at U5110.
Will not turn on in SMC Bypass.

 

2informaticos

Administrator

Staff member

Wednesday at 5:17 PM

• #6

Check all voltages and signals at U5000 (2 OF 2) in page 38.

 

Instafixx

Active member

Thursday at 1:06 PM

• #7

I have the boardview but unable to locate the PDF on the internet.
I replaced the SMC Now the current draw is pulsing between 30Amps and 400 amps.

Tried SMC bypass and it had a stable current draw of 300amps but wont turn on.

 

2informaticos

Administrator

Staff member

Yesterday at 12:18 AM

• #8

A1502 - 4924 - X304.rar

drive.google.com

Which coils get voltage in SMC bypass?

 

Instafixx

Active member

Yesterday at 11:33 AM

• #9

L7130 - 12.3 v
L7520 - 0 v
L7560 - 3.3 v
L7430 - 0.02 - 0.45 v
L3095 - 0 v
L7310 - 0 v
L7320 - 0 v
L7630 - 0 v

 

2informaticos

Administrator

Staff member

Yesterday at 6:09 PM

• #10

"Check all voltages and signals at U5000 (2 OF 2) in page 38"
???