The Advance Drive Technology TM5‑015i‑1N 49866‑105 IFT Drive Cube is a single‑phase variable frequency drive (VFD) that converts 100–115 V AC input into a three‑phase output up to 150 Hz for treadmill or motor applications. Common failure modes in this class of drives include capacitor degradation, overheating of the power MOSFETs, burnt gate driver ICs, and loss of communication with the controller due to faulty IFT interface circuitry. First‑check diagnostics: verify input voltage and phase balance; inspect the main capacitors for bulging or leakage and test the MOSFETs for continuity and junction temperature; examine the IFT connector pins for corrosion or loose contacts and review any error codes displayed on the drive’s diagnostic panel.[oss-gpt-20b]