820-4924-a not detecting SSD

BCN_Techs

Member
SSD is ok, checked it on other macbook. Cant find any problem on logic board. No water damage. Just stop working 1 day.
 

2informaticos

Administrator
Staff member
Pins 7 & 8 must be 0V, all the time SSD is connected.
Pay atention at end "_L" in the signal names...

Check for acorrosion around U3710/11, be sure R3700/03 are good.
Also check all the caps from PCIE lines of SSD.
Compare diode mode readings on the data lines to ground, with known good board.
 
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