1. Which of the following causes the severe flickering of the screen?
To ensure that the power supply voltage is stable, please check whether there is interference in the magnetic field.
2. There is no screen display and the indicator on the front panel is flashing, what should I do?
Check whether the signal wiring between the screen and the decoder board is firm, and check whether the signal line connector is bent or broken.
3. Can LED work continuously for a long time?
There is no problem with LED running for a long time. In fact, LED has less heat and low power consumption, so it is more suitable for long-term operation. However, from the perspective of maintenance, LEDs should be given some rest time. After all, LEDs are a more delicate product, and problems are not as easy to solve as crt displays.
4. How to clean the LCD screen?
When cleaning the LCD screen, try not to use a damp cloth with too much water content, so as to avoid the occurrence of faults such as a short circuit inside the LCD caused by moisture entering the screen. It is recommended to use soft materials such as glasses cloth and lens paper for wiping. This can prevent moisture from entering the inside of the LCD screen and avoid scratching the screen.
5. Can individual users remove the LCD by themselves?
This is because even after turning off the LCD for a long time, the CFL inverter inside the CFL inverter can still generate a voltage of about 1000 volts, which can cause serious personal injury. Therefore, do not open it yourself to avoid high pressure. And if you remove the LCD without the permission of the dealer, you will lose the warranty.
6. What should I do if the plug on the advertising player does not respond?
Check whether the special power supply of the advertising machine is powered on, check whether the power cord is loose, if there is voltage, check whether the decoder board is powered, then check whether the advertising player drive board is powered, check whether the high voltage bar is powered on, and see if the LCD screen is powered on, any One difference means that the fault lies in the component, and the manufacturer is notified to replace the component. Generally speaking, the possibility of power supply damage is the greatest.
7. How to solve the problem that there is no sound from the LCD advertising machine?
Use a multimeter to measure whether the power supply on the drive board is energized and normal, and check whether the speaker wiring is normal. If the drive board of the advertising player is not properly supplied, replace the drive board. If there is an abnormality, replace the speaker. The connecting wires of the general advertising player and the speaker are most likely to fall off. If they fall off, use a soldering iron to solder them. If the speaker is noisy, replace the driver board. The above components can be sold by the manufacturer.
