What happened to the led light on the lifting column?

The reasons why the lifting column led light does not light up are as follows.

1, there is a phenomenon of virtual welding in led strip solder joint. During transportation, the vibration causes the solder joint to fall off and the lamp strip is not bright.

2. When installing, the bending angle is too large, which causes the solder joint of the led light bar to be separated from the copper foil, resulting in no light.

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