Intel PCH

Component appearing in 1 repair guide(s).

Appears in 1 guide(s)

MacBook Pro A1502 / 820-3476 / 820-4924 — Level 3 Repair Guide 820-3476
ReferencePCH / CPU
PartIntel PCH (integrated in CPU die)
FunctionPlatform Controller Hub — same die as CPU
RailsPP3V3_S3 PP5V_S3
⚠ Failure
Persistent PP3V3_S3 short → inject 3V → CPU heats = dead PCH. Unrepairable without reball.
This component appears in these symptom diagnoses
→ No Power→ No Display
Related IC family
BIOS FLASH — PCH reads firmware at POSTTPS51125 — generates DDR3L supply for PCH memory