1, although fuse is not burned, neither do the line ，resistance is apparently damaged， beyond doubt.，transistor must be damaged ，which is may be caused by the aging of the lamp, followed by poor using environment, the other may be caused by C1 losing capacity. For the first two cases, replace resistors, transistors, the best is replacing matching C3, C4 small electrolysis. For the latter, C3, C4 does not have to be replaced, because C1 operates under high pressure, be sure to use high-quality heat-resistant electrolytic capacitors substitution.
2,fuse burned, in the case of the line burned, if C1, Q1, Q2 intact, you must individually routine inspection and pressure testing for D1 ~ D4. Or the D1 ~ D4 all with quality product substitution.
3, C1 burst, if accompanied fusing insurance, blown the line ， D1 ~ D4, C1 to all should be replaced.
4, only one side of the RC element Q2, transistor is burned, C2， should focus on checking whether the breakdown.
5, if high-frequency transformer B is damaged, the∮ 0.32mm high strength line can wound on a 10mm × 6mm × 5mm high-frequency magnetic, T1, T2 should be wounded the four laps; T3 8 ring (note head and tail). Chokes L: lamp power is 5 ~ 40W, corresponding to between 1.5 ~ 5.5mH
Definitely, choosing a good quality LED lighting is also a key factor eliminating failure, Lead lighting LED lighting stick to adopt qualified materials to produce a variety of energy saving LED flood light, LED tunnel lights, LED tube and other indoor and outdoor lighting, we believe that Lead lighting www.lead-lighting.com must surely lead us closer to energy-saving life with excellent quality and the constant pursuit of innovation for our level of consumption.
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