Driven by the informatization of the Internet, the application range of digital signage has continued to expand. As a product of the new media era, advertising machines have gradually entered the ranks of “arcade machines”. However, because many users do not have professional advertising machine knowledge and technical principles, they are often at a loss for problems that arise during use, and can only find the manufacturer’s customer service staff to help solve them, which greatly wastes time and money. In order to further improve the efficiency of the advertising machine and let users master basic knowledge and maintenance skills, Shenzhen Layson Optoelectronics Co., Ltd. has sorted out the eight major problems that are prone to occur during the use of advertising machines and their solutions here.
1. When the advertising player is turned on and off, dry anti-clutter lines appear on the screen
Generally speaking, this phenomenon is caused by the signal interference of the display card, which is a normal phenomenon, and the user can solve it by adjusting the phase automatically or manually.
2. A black spot the size of a thumb appears on the display screen
Most of this phenomenon is due to the squeezing of external forces. Under the pressure of external force, the polarizer in the liquid crystal panel will change shape. This polarizer is like aluminum foil and will not bounce up after being pressed in. This causes the difference in the reflection of the liquid crystal panel, and there will be a dark part, this part It is easy to find under the white screen, the general size is more than ten square millimeters, which is the size of a thumb. Although this phenomenon does not affect the service life of the LCD screen, it still affects the overall appearance, so users should pay more attention not to press the LCD screen with their fingers.
3. No response after plugging in the power
This is the most common question in practical applications. For this problem, the user can try to open the back cover of the advertising player to check whether the dedicated power supply is energized, and whether the wire is off or loose. Specific method: Use a multimeter to measure whether the indicator light is on. If it is normal, it means that the power supply is powered. The power supply problem is ruled out, and the user should check the power on of the decoder board, advertising player drive board, high-voltage bar, speaker, and LCD screen in turn. Where there is no power, it means that there is a problem with the accessories of the advertising machine.
4. There is no display on the screen, and the indicator light on the front panel flashes
After this problem occurs, the user should check whether the signal cable connection between the monitor and the computer is firm, and check whether the signal cable connector is broken or bent or damaged.
5. The screen of the advertising machine flickers
During the playback of the advertising player, the screen flickers is also a problem that users often encounter. In this regard, the user must first perform exclusion checks on external factors such as the magnetic field, power supply voltage and so on around the device. If it still cannot be used normally, it is necessary to perform a comprehensive check on the display’s graphics driver to eliminate program installation problems. After the above operation is invalid, the user can also try to increase the refresh rate by 75HZ to see if it is feasible. If none of the above operations can achieve satisfactory results, the user needs to send the equipment to the manufacturer for inspection and repair.
6. The screen is black and displays the signal “DUT OF RANG”
This phenomenon is a thorny problem that users have seen in practical applications. Generally, the signal sent by the computer exceeds the display range of the display, and the display detects an abnormal signal and stops working. In this regard, the user can try to restart the monitor and reset the output frequency of the computer.
7. There is no sound when the advertising player is playing
The user can first open the back cover of the advertising player, use a multimeter to check whether the drive board is powered on, and then check whether the speaker cable is connected properly. If there is loud speaker noise, it means that the advertising player’s drive board has been damaged and should be replaced immediately.
8. The cleaning problem of advertising player
Do not use any cleaning agent when cleaning the exterior of the advertising player, otherwise it will easily cause the exterior to lose its factory gloss, so it is best to choose a cotton cloth soaked in water to clean the LCD screen. Avoid using a wet cloth with too much moisture to avoid moisture. Entering the screen causes an internal short circuit. It is best for users to use soft objects such as glasses cloth and lens paper for wiping, which can prevent moisture from entering the inside of the screen and prevent scratch.
Post time: Dec-13-2021