Jelrus 18510 “Dental Lad” is an integrated control and temperature‑management module used in dental porcelain ovens and related lab equipment. Common failure points on this board include degraded power‑input circuitry (capacitors, rectifier diodes), burnt or cracked PCB traces around the CPU and heater‑driver sections, and failed relays or MOSFETs that regulate furnace cycling. Initial diagnostics should verify proper 120 V/240 V input voltage and check for any blown fuses; inspect the board visually for burn marks or loose solder joints, particularly near the main power IC and heating element driver; then read any stored fault codes via the diagnostic port if available.[oss-gpt-20b]