D9 USB LED: loose contact reflowed, now lights correctly

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

hardware/re-bba-rb/TODO.md

@@ -249,18 +249,17 @@ schematic changes.
       OVLO divider off 12V_RAW, R_top ≈ 1.1 M / R_bottom ≈ 100 k → trip ~15 V.
       See REVIEW.md eFuse entry. Bench workaround: feed 12 V onto 12V_EXI (C65+ /
       U3 VIN) to bypass it. This must be fixed before any V2.1 fab order.
-- [ ] **D9 "USB" LED dark — OPEN SOLDER JOINT on its anode pad (found at
-      bring-up 2026-09-30). Assembly defect on this unit, NOT a design bug.**
+- [x] **D9 "USB" LED dark — OPEN SOLDER JOINT on its anode pad — FIXED by
+      reflow 2026-09-30. Assembly defect on this unit, NOT a design bug.**
       Symptom: D9 never lights, on USB-only or GC power. Measured 3V3 on the
       anode-side pad and 0 V on the cathode with the LED dark — i.e. the full
       rail standing across it, so no current and no drop across R42 (if D9 were
       conducting the anode would sit at Vf ≈ 2 V). Touching the anode pad with a
       meter probe makes it light at full brightness: the probe pressure closes
       the joint. So Q2 (S8550 PNP) and R42 are fine and the LED itself is fine —
-      the terminal is sitting on the pad without wetting it. **Fix: flux +
-      reflow D9's anode pad** (and R42's pad on the same net, `Net-(D9-A)`,
-      while the iron is there). Cosmetic indicator only; does not affect the
-      power mux, which is working (GC/USB handover verified via D8 + rails).
+      the terminal was sitting on the pad without wetting it. **Reflowed —
+      D9 now lights correctly.** Cosmetic indicator only; never affected the
+      power mux, which works (GC/USB handover verified via D8 + rails).
       Footprint is not suspect — D6/D8/D12 are the same reverse-mount part
       (Everlight 24-21, C2980185) and all three light correctly.
 - [ ] **12 V inrush limiter (U13 TPS25961 eFuse) — SCHEMATIC DONE 2026-07-31**,