After the power off, the LED has been slightly bright

As you now said the situation is the power off after the LED has been slightly bright, LED light beads will soon fade. You check if the wire is grounded. So it produces static electricity, so the lamp bead will always be bright. This situation must be dealt with in a timely manner. There is also a situation where electricity is surplus. If you turn off the electricity after a while, it is more than electricity, the impact on the LED is not big.

If it is the first case, you should first check the FireWire, should be the line of fire caused static electricity. You should have no problem checking the line! The current market in comparison with the LED power supply is relatively mature, if the lights are short time light, generally the capacitor discharge caused by the power, but like you said a long time on the words, this with your product drive power quality has a direct relationship!

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