Nowadays, digital signage LCD bar screen has become a great tool in the field of advertising as the preferred tool for advertisers. When using digital signage LCD bar screen, sometimes you may encounter some problems and failures, which may be caused by improper operation or external factors, such as insufficient repetition, signal interference, black screen, etc.. Therefore, in normal times, we need to carry out some maintenance work to better avoid these problems. Here are some lists about the common faults of digital signage LCD bar screen and their treatments and solutions from FUNLCD Technical Department.
1. Interference noise problem
Fault description: Interference noise appears on the screen when switching devices.
Treatment: Usually, this is a normal phenomenon caused by the signal interference of the display card. Users can solve it by adjusting the phase automatically or manually.
2. Black spot problem on the LCD screen
Fault Description: Thumb-sized black spots appear on the screen, usually caused by external pressure.
Treatment: Avoid extruding the LCD panel with external force and don’t insert your finger into the LCD screen.
3. No sound problem
Fault Description: No sound from the LCD bar screen.
Treatment: Check the validity of the driver board, and then check whether the speaker cable connection is normal. If there is a loud speaker noise, the bar screen driver board is damaged and needs to be replaced.
4. No display and indicator light flashing problem
Fault Description: The screen does not display, the front panel of the indicator light flashes.
Treatment: Check the signal line connection between the monitor and the computer to ensure that the signal line is not damaged.
5. Beyond the synchronization range
Fault Description: The screen display signal is out of the synchronization range.
Treatment: Try to reset the output frequency of the computer to solve this problem.
6. Flickering problem
Fault Description: The screen appears to flicker.
Treatment: First check the magnetic field around the device, power supply voltage and other external factors, and then check the plug-in driver. If the problem is still not solved, try to increase the refresh rate.
7. No response problem
Fault Description: The LCD bar screen does not respond after plugging in the power supply.
Treatment: Check the power connection, whether the wire is loose or damaged, and then gradually check the energization of the driver board, high-voltage strip, speakers and LCD screen.
When cleaning the LCD bar screen, be careful not to use detergents, use a cotton cloth to wipe the shell. When cleaning the screen, avoid using hard objects and use soft objects, such as eyeglass cloths, to prevent moisture from getting inside the screen and to prevent scratches. In addition, ensure that the working environment of the LCD bar screen humidity is maintained between 30% and 80% to avoid condensation problems.
To summarize, understanding and solving the common failures of digital signage LCD bar screen is the key to ensure its normal operation. For some complex problems, it is best to seek professional assistance. With these maintenance and repair methods, you can ensure the long-lasting use of digital signage LCD bar screen. If your problem still can’t be solved, feel free to contact FUNLCD’s technical team. We are online 24 hours a day to help you.
