The logic board of the MacBook Air (13-inch, Mid 2012), model A1466, 2012, 13-inch. 5 known faults with their symptoms below.
No guided tree is live for this board yet. The profile, the viewer and manual entry are there on the free plan, and the first sessions on it build the tree.
| Net | Nominal | Role |
|---|---|---|
| PPDCIN_G3H | 16.5 V | Charger input from the DC-in board (14.85 V, 16.5 V or 18.5 V by adapter) |
| PP3V42_G3H | 3.42 V | Always-on 3.42 V; the SMC needs only this rail to start and the MagSafe light comes from it |
| PPBUS_G3H | 8.4 V | Main bus from the ISL6259 (U7000) or the battery; a good board read 8.4 V on the charger |
| PPVRTC_G3H | 3.3 V | RTC rail from the clock chip U1900 |
| PP3V3_S5 | 3.3 V | 3.3 V S5 rail |
| PP5V_S5 | 5 V | First SMC-enabled rail, from U7501 |
| PP5V_S4RS3 | 5 V | S4 rail, up once the PCH asserts PM_SLP_S4_L |
| PP3V3_S4 | 3.3 V | 3.3 V S4 rail |
| PP3V3_S0 | 3.3 V | 3.3 V S0 rail |
| PP5V_S0 | 5 V | 5 V S0 rail |
Checked on 2026-10-29 against 2 sources: verified. Revision A is a placeholder until Studio records the real revisions.
Seen in 25% of recorded fixes on this board.
The fix, the readings that point to it and the guided tree are in the app. Free account
Seen in 20% of recorded fixes on this board.
The fix, the readings that point to it and the guided tree are in the app. Free account
Seen in 15% of recorded fixes on this board.
The fix, the readings that point to it and the guided tree are in the app. Free account
Seen in 15% of recorded fixes on this board.
The fix, the readings that point to it and the guided tree are in the app. Free account
Seen in 15% of recorded fixes on this board.
The fix, the readings that point to it and the guided tree are in the app. Free account
Open the board in NextProbe, answer the symptom questions and follow the lit point. The free plan includes three guided sessions a month. Your own boardview and schematic stay on your machine.