Common Breakdowns and Trouble-shooting Guide

1. Symptom: the whole display is flickering.

Problem: poor signal connection.

Solution: re-fix or re-connect signal cable.

2. Symptom: dusky LED

Problem: The voltage of switching power supply isn't consistent with LED rated voltage.

Solution: make sure the voltage of switching power supply is consistent with LED rated voltage.

3. Symptom: part of LEDs do not work.

Problem:

A. signal interface hook up backward;

B. or power cable connect incorrectly.

Solution:

A. re-connect signal interface correctly.

B. ensure the red wire connect to the positive pole, black wire connect to the negative pole.

4. Symptom: all LEDs do not work

Problem:

A. no output of the switching power supply.

B. incorrect power output wiring.

Solution:

A. connect the power switch input and test.

B. check power supply connections to see if they are connecting correctly or not.