Ruiguan answers four common questions in lcd advertising machine display screen
Nov .17.2025
quan điểm
1. There is no display on the screen, and the indicator light on the front panel of the advertising machine display screen flashes.
After this problem occurs, users should check whether the signal line of the monitor and the computer is firmly connected, and whether the pin of the signal line is broken or bent.
2. The screen of the advertising machine display screen flashes.
In the process of playing the advertising machine display screen, it is also a common problem for users to flicker on the screen.
For this reason, users need to check the external factors such as magnetic field and power supply voltage around the device first. If it still can't be used normally, it is necessary to conduct a comprehensive inspection of the display card driver to remove the installation problems of the program. The above operation is still invalid.
Users can try to increase the refresh rate by 75HZ, but it is not feasible to check. If the above operations can't get satisfactory results, users need to send the equipment to the manufacturer for inspection and repair.
3. When the advertising machine display screen is switched on and off, there are interference lines on the screen.
Generally, this phenomenon is caused by the signal interference of the display card.
This phenomenon is normal, just stay away from the signal interference source, and the user can automatically or manually adjust the phase to solve it.
4. lcd advertising machine did not respond after plugging in the power supply.
This is the most common phenomenon in practical application. In view of this phenomenon, users can try to open the back cover of the advertising machine and check whether the special power supply is electrified and whether the existing materials are loose or fall off. Specific method: use a multimeter to measure whether the indicator light is on.
If it is normal, it indicates that the power supply is electrified.
Excluding the power supply problem, users should check the power supply of the decoding board, advertising machine drive board, high voltage bar, speaker and LCD screen in turn.
Where there is no electricity, it means that there is something wrong with the accessories of the advertising machine display screen.
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