The Wayne Kerr 3245 Precision Inductance Analyzer is a benchtop instrument that drives, biases, and measures inductors, coils, and transformers over 20 Hz–300 kHz, with up to 100 A DC bias via five 3220A units. Common failure points for this class include degraded stimulus generator outputs (e.g., oscillator drift), power supply regulation issues, and aging analog front‑end components such as op‑amps or precision resistors that can skew measurement accuracy. First‑check diagnostics: verify the main ±15 V/±12 V supplies are within spec, inspect the 3220A bias unit for correct current output, and review any error codes on the display; a quick visual inspection of front‑panel connectors and the CRT panel should also be performed.[oss-gpt-20b]