Wall-mounted online advertising machine is a device that can be seen in many places today. It is mainly used for advertising, and the main purpose of advertising is to promote, let more people recognize some company's products, and enhance the company's popularity, so this kind of wall hanging The existence of the wall-mounted network advertising machine still makes sense, but this wall-mounted network advertising machine will have some different situations during its operation. About these conditions, I will explain a few things to you next.
The common situation of wall-mounted network advertising machine is that there is no power supply (black screen). This situation may be due to a bad built-in power supply or a bad drive board inside the machine. It is recommended to check whether the power output is normal. If there is no output from the power supply, it can be confirmed that the power supply is bad. Under normal circumstances, the driver board may not be good. In addition, there is a flower screen that does not display or display abnormally in a certain area on the LCD screen. This time, pay attention to whether the signal transmission line plugged into the LCD screen is loose, resulting in poor contact. If this happens, please plug in the signal line and repair it, and check whether the problem is solved. If this is not the case, the LCD may be defective. There is also a case where the screen is very dark (the screen is not displayed, splash screen), when the advertisement is playing, the LCD screen is always black, black screen, splash screen, etc., it is called black screen. At this time, it is necessary to check whether the power output is normal. If the output voltage of the power supply is unstable (the voltage value does not reach 1112V), it can be confirmed that the power supply is defective.
If the power output is normal, you need to replace the drive board and inverter one by one until the fault is eliminated. No signal is also a very common situation. When there is no signal on the screen when the power is on, it is called no signal. Check whether the internal video cable and the 5V power cable input to the decoder board are loose. If there is no such phenomenon, you need to replace the decoder board or engine board. After replacement, check if the fault disappears. Although the wall-mounted network advertising machine is widely used now, if the problems that arise are not solved in time, it may become an obstacle to future development, so the solution of these problems for the wall-mounted network advertising machine is urgent.
