Lack of color and output problems are problems we may encounter when using LED displays, so many of our friends want to know how to solve these problems. Let the editor tell you how to solve them today.
1. The display lacks color:
1) Check whether there is input or output on the color data terminal of 245.
2) Check whether the data signal of this color is short-circuited with other lines.
3) Check whether the cascade data port between the driver ICs of this color has an open circuit or a short circuit or virtual soldering. Note: It is easier to find the problem using the voltage detection method, and check whether the voltage of the data port is different from the normal voltage, and determine the fault area.
2. There is a problem with the output:
1) Check whether the line from the output interface to the signal output IC is connected or short-circuited.
2) Check whether the clock latch signal of the output port is normal.
3) Detect whether the cascade output data port between the last driver IC is connected to the data port of the output interface or is short-circuited.
4) Whether the output signals are short-circuited to each other or short-circuited to ground.
5) Check whether the output cable is good.
LED display manufacturers have solved the problem of lack of color and output above. If you encounter other problems during use, don't panic, we can better solve the problem after understanding the reason.
