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Anonymous users2024-01-24According to your description, it should be that there are lamp beads damaged on the LED light board. The LED lamp beads are connected in series, and if the lamp beads are damaged, the driving power supply is equivalent to no load, so the voltage you measure will be slightly higher than the rated voltage. Emergency maintenance can be used with the built-in 3V battery of the meter multimeter resistance gear or with a 4-5V power supply plus current limiting resistance to detect the lamp beads on the LED light board one by one, with a wire will be damaged and broken LED spot welding short circuit, of course, it is best to replace the entire LED light board.
1. Use two red wires of baiLED transformer.
The du is directly connected to 220V. >>>More
Check whether the lamp is broken before cutting off the power supply to prevent electric shock, and then remove the lampshade, check whether the lamp joint is loose, turn on the lamp after tightening, if it is on, it means that it is caused by poor contact, if the sign is still not bright, you can check whether the lamp joint is black and dark, if there is, you can basically determine that it is a problem with the lamp, just remove the old lamp and replace it with a new lamp. >>>More
When the lights are not on, make sure that the circuit is okay first. If it is a new lamp, use an electric pen to measure it or install an incandescent lamp to see if there is voltage in the circuit. Once you are sure that the circuit is fine, you can start the following maintenance. >>>More
What is the lot of this kind of lamp? It doesn't have to be the same, as long as the power is about the same.
Turn off the electric pen to test whether there is any current, or trip, if it is safe, call the electrician to come and see.