After heavy detection and control ,flexible LED strip still no light.Investigate its reason, as the following kinds:
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It's not perfect on packaging,and damaged in transportat .
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Welding of LED strip is empty. It causes the soldder joints shake off the light in transport.
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LED light is short of welding .it causes the soldder joints off the lights.
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The quality of the welding is not high. The soldder joints off the lights on we bending the strip .
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The bending angle is high in installation .the sodder seperates with copper foil.so it doesn't light.
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We extruded the lights heavily in installation . the lights is damaged.