One is the problem of water leakage.

The garbled characters appearing on the LED display are generally related to water leakage. Due to the improper waterproof measures during installation, water will be saturated after rain. Causes the circuit board to short-circuit, thus forming a chaotic code. If such a situation occurs, Jianyi will immediately find a supplier or repair factory for repairs.

Second, it is the problem of data transmission.

The control circuit of the brain-computer output to the screen is malfunctioning, and the main check is the power supply and signal input part of the screen. If the board of the control system is damaged, the data line interface is damaged, and the data line is connected reversely, the code of the outdoor display screen will be confused.

Third, it is the line layout problem.

If the power supply problem is ruled out, test whether the power supply of the bad module is normal (if the first module that is abnormal has 80% of the dark light, it is a power supply problem).

4. The software or control card is faulty.

The parameters of the LED display have not been set. At this time, you need to determine the scan configuration problem, usually 1/4 scan; if there is no software problem, check the control card problem; if you don't do it, you can only contact the service provider to solve it.