Common faults of LED light-emitting modules-EEWORLD

Collect

1. Phenomenon: All LEDs flash.

Problem: Poor contact.
Solution: Re-fix or reconnect the loose parts.

2. Phenomenon: LED is dim.

Problem:
1. The LED polarity is reversed.
2. The LED is too long.
3. The switch power supply and LED voltage are inconsistent.
Solution:
1. Ensure that the positive and negative poles are connected correctly.
2. Reduce the number of LED connections.
3. Ensure that the switch power supply and LED voltage are consistent.

3. Phenomenon: The LED lights of some lines are not on.

Problem:
1. Is the plug-in direction correct?
2. Is the power output wiring correct?
3. The power cord is plugged in or connected in reverse.
Solution:
1. Remove and reconnect 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. Find out the wires that are plugged in reverse and reconnect them.

4. Phenomenon: All LEDs are off.

Problem:
1. The switching power supply has no voltage output.
2. Is the output wiring of the switching power supply correct?
Solution:
1. Connect the power supply input terminal for testing.
2. Check whether the positive and negative poles of the power supply wiring are correct.

Keywords：LED Reference address：Common faults of LED light-emitting modules

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