First, the phenomenon: all the LEDs flash. Second, the phenomenon: LED dim. Third, the phenomenon: the LED lights of some lines are not bright. Fourth, the phenomenon: all LEDs are not bright. These machines are used for the production of nails ROYAL RANGE INTERNATIONAL TRADING CO., LTD , https://www.royalrangelgs.com
Problem: Poor contact.
Solution: Re-fix or plug in the loose area.
problem:
1. The LED polarity is reversed.
2. The LED is too long.
3. The switching power supply and the LED voltage label are inconsistent.
Solution:
1. Make sure the positive and negative terminals are wired correctly.
2. Reduce the connection of LEDs.
3. Ensure that the switching power supply is consistent with the LED voltage label.
problem:
1. Is the connection direction correct?
2. Is the power output wiring correct?
3. The power cable is plugged in and reversed.
Solution:
1. Remove and re-plug in the correct direction.
2. Make sure the red wire is connected to the positive pole and the black wire is connected to the negative pole.
3. Identify the partially inserted and reversed lines and reconnect.
problem:
1. The switching power supply has no voltage output.
2. Is the switching power supply output wiring correct?
Solution:
1. Test power is connected to the input end of the switching power supply.
2. Whether the positive and negative terminals of the power supply are correct.