Industry Applications
Lamp fails to light up
Causes: Loose wiring, burnt lamp filament, damaged resonant capacitor, broken MOS tube, low temperature or damp triggering protection.
Solutions: Tighten all wires, replace matched lamp, change damaged components, dry PCB and rework waterproof coating.
2. Lamp flickering, unstable brightness
Causes: Fluctuating grid voltage, aging resonant capacitor, worn UV lamp, slight leakage caused by moisture.
Solutions: Install voltage stabilizer, replace capacitors and aging lamps, re-coat conformal coating.
3. Overheating housing & thermal protection shutdown
Causes: Mismatched lamp power, poor ventilation, long-term full-load operation, aging components.
Solutions: Match ballast and lamp power, improve heat dissipation, avoid continuous non-stop operation.
4. Abnormal humming or high-frequency noise
Causes: Loose transformer core, loose components, cracked potting glue, installation resonance.
Solutions: Fix internal components, refill potting glue, reinforce mounting bracket.
5. Frequent RCD tripping, electric shock on casing
Causes: Damp PCB with low insulation, bare oxidized terminals, broken wires close to metal housing, leaking capacitors.
Solutions: Dry the ballast thoroughly, apply full conformal coating, seal exposed joints, rearrange internal wiring, ensure insulation resistance ≥5MΩ.
6. Automatic power-off and repeated restart
Causes: Overcurrent/overvoltage/overheat protection, leaking aged lamp, grid surge, soft breakdown of components.
Solutions: Replace faulty lamp, install surge suppressor, replace broken power devices, improve cooling.
7. Output power attenuation, weak UV intensity
Causes: Aging capacitors, degraded MOSFETs, long-term high temperature operation.
Solutions: Replace all aging capacitors and power tubes, optimize heat dissipation.
8. Component burnout, no response after power on
Causes: Wrong wiring, short circuit, high voltage surge, internal short circuit due to water ingress.
Solutions: Standardize wiring, add surge protection, fully dry and replace burnt components, redo waterproof sealing.
