820-3462 No image

No-Clean

Member
SMC_LID 3.42
LCD connector looked good and no shorts
PP5...?..SW_LCD 5v
U9701 Pin 23 5v, Pin 3.3v

Recently on 2 820-3332 I replaced U8900 for no image and both are working good now, I am wondering if replacing U7400 wil fix it on this one.
 

2informaticos

Administrator
Staff member
Check all C902x caps and their traces.
Also check AUX strapping resistors and all R901x.

40V is OK there.
 

2informaticos

Administrator
Staff member
Did you try known good compatible LCD assembly?

"not sure what AUX strapping resistors are"
What happens if you search for "AUX strapping" in pdf?
 

No-Clean

Member
I don't have anotherone of those LCDs, I have a late 2013 but with that one same problem.
When I search for
AUX strapping I get results, thanks!
 

No-Clean

Member
The problem is the facetime camera on the LCD or the board, when that cable is disconnected the Mac works just fine, I will be checking out that circuit and see if we can fix it without replacing the screen. If you have any pointers on how to address that please let me know.
 
Top