FDC638APZ
Component appearing in 1 repair guide(s).

Appears in 1 guide(s)

MacBook Air A1466 / 820-00165 — Level 3 Repair Guide 820-0016
ReferenceQ7706
PartFDC638APZ SSOT6 (P-channel FET)
FunctionBacklight power switch
RailsPPBUS_G3H → PPVIN_S0SW_LCDBKLT
⚠ Failure
If PPBUS_G3H is present but PPVIN_S0SW is absent → Q7706 failed (typical RDS(on) 43 mΩ @ 4.5V).