Question

LED light module failure and solutions

Answer 1

(I) Phenomenon: All LEDs flicker;

Problem: Poor contact;

Solution: Re-fix or reconnect loose parts;

(II) Phenomenon: LED is dim;

Problem:

1. LED polarity is reversed;

2. LED is too long;

3. Switching power supply and LED voltage labels are inconsistent;

Solution:

1. Ensure that positive and negative poles are correctly wired;

2. Reduce the number of LED connections;

3. Ensure that the switching power supply and LED voltage labels are consistent;

(III) Phenomenon: LED lights on some lines are not lit;

Problem:

1. Is the plug-in direction correct;

2. Is the power output wiring correct;

3. The power cord is plugged in reverse or connected in reverse;

Solution:

1. Remove and reconnect in the correct direction;

2. Ensure that the red wire is connected to the positive pole and the black wire is connected to the negative pole;

3. Find out some of the reversed wires and reconnect them;

(IV) Phenomenon: All LEDs None of them light up;

Problem:

1. The switching power supply has no voltage output;

2. Is the switching power supply output wiring correct;

Solution:

1. Connect the test power to the switching power supply input terminal;

2. Is the positive and negative poles of the power supply wiring correct?