820-2850 no wifi

grmacs

Member
No wifi detected in system info. Replaced wifi card and cable and still nada. Tried pram and smc resets just to be sure. No noticeable issues in wifi section of board... I feel like this is something stupid.
 

grmacs

Member
3.3V pins 1,2,4,5 of u3401. 0 on pin 3.
L3404 had 3.3V on both sides but zero ohms resistance
3403 - 0V all 4 points 3.3 ohms
3401 -.37V on all 4 points 1.4 ohms
 

2informaticos

Administrator
Staff member
Any history available?
Connectior pins look good?
Check diode mode on all PCIE data lines.
Be sure C3430/31 are good and check diode mode on boths sides of them.
 
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