LED detection process, First, eliminate false faults. The intermittent flash after turning off the light is not the quality of the light. Main reason is electrical circuit installation is not standard, set the switch in zero line to cause. As long as the incoming line end and live wire exchange can be. Use a neon switch, which can still form a micro circulation circuit after turning off the lamp, or install a double switch by borrowing a line, which may cause flash after turning off the lamp. When repairing LED energy-saving lamps, measures should be taken for safety application: isolation transformer isolation mains. Secondly, LED energy-saving lamps can not be normally lit maintenance: LED energy-saving lamps have obvious damage to the maintenance of components.