Miracle Thunder — 340 Work [exclusive]

| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | Unit hums loudly at startup | Loose ferrite core inside | Re-torque core mounting screws to 1.8 Nm | | Output voltage sagging >5% | Incorrect load learning | Factory reset and re-run the 30-min Load Learning cycle | | Intermittent power cycling | Overheating due to dust | Clean intake filter and verify fan operation | | “No Communication” with PC | Faulty USB driver | Install Miracle Thunder 340 driver pack v2.1 (Windows 10/11 only) |

If you want, I can: