The Farm Works 58‑D is an electric fence controller that energizes a low‑impedance livestock fence by delivering brief high‑voltage pulses from an AC or solar power source. Common failures on this model include capacitor bank degradation, relay contact wear, and insulation breakdown between the output terminals, often indicated by intermittent charging or a loss of pulse frequency. Additionally, overheating of the internal heat sink can trigger thermal shutdowns. First‑check diagnostics: verify that the unit is receiving its rated input voltage and that the power supply is stable; inspect the output capacitors and relay contacts for signs of corrosion or burn marks; and review any error codes displayed on the controller’s LED panel or diagnostic port.[oss-gpt-20b]