LCD advertising machine is a new platform currently used for advertising communication. Its fields include transportation hubs, shopping malls, museums, banks and many other public places. LCD advertising machines have a service life of 6-7 years and appear during use. The possibility of the problem is inevitable, then it is necessary for the user to master some basic LCD advertising machine troubleshooting solutions.

1. The LCD advertising machine does not respond after plugging in the power.

First check if the dedicated power supply is powered, which is a common problem in practical applications. You can try to remove the back cover and check to see if the wire is loose or loose. Test method: Use the multimeter to measure whether the indicator light is normal. If it is normal, it proves that the power supply is powered, and the power failure problem is eliminated. Secondly, check the power-on status of the decoder board, the advertising machine driver board, the high-voltage strip, the speaker, and the LCD screen in order to see if there is a problem with the accessories and cause no power.

2. LCD advertising machine automatically shuts down after booting

It is necessary to distinguish whether the menu setting of the LCD advertising machine is in a punctual shutdown state; the machine presents a short-circuit appearance to replace the main board; the high-voltage bar is not working properly, and the high-voltage bar is replaced; the remote control is not working.

3. When switching on the LCD liquid crystal advertising machine, the screen is disturbed.

This condition is caused by the signal interference of the graphics card and is attributed to the normal appearance. This question can be handled by adjusting the phase automatically or manually.

4. When the LCD advertising machine starts, there is no sound, and the screen is not displayed. At this time, there may be a problem that the indicator light on the front panel is blinking.

If there is no sound, you can open the back cover of the LCD advertising machine, use the universal meter to check whether the driver board is powered, and then check if the speaker cable is connected properly. If the speaker has a loud noise, the driver board of the advertising machine is damaged. , you can replace it. If there is no screen on the screen, the user can check whether the signal connection between the monitor and the computer is strong enough, and carefully check whether there is a problem with the interface of the signal line. If the pin is bent or broken, it should be replaced in time.

5. LCD advertising machine screen is flashing

Please check whether there is magnetic field disturbance around the LCD advertising machine; please check whether the power supply voltage is stable; please check the display, graphics card driver; improve the refresh rate of 75HZ; if it still does not work, you can only find the LCD advertising machine manufacturer to solve the problem.

6. LCD advertising machine uses a period of time to produce chromatic aberration

How can we slow down its light decay rate without being bothered by it. Firstly, the power level is controlled, and the output power of the local oscillator is controlled in the microwave superheterodyne receiver, and a good noise figure and variable frequency loss are obtained to achieve better reception effect. In the microwave receiver, automatic gain control is implemented to improve the dynamic range. The hopping attenuator used in radar anti-interference: it is a variable attenuator with a sudden change in attenuation. It does not introduce attenuation at ordinary times, and suddenly increases the attenuation when it encounters external interference.