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Solution to common problems of advertising machine

1. LCD advertising machine has no sound: after this problem, the user can first open the back cover of the LCD advertising machine. If it is a wall mounted advertising machine, then remove the wall mounted advertising machine, and then open the back cover. Use a multimeter to check whether the function of the drive board is powered on, and then check whether the connection of the horn cable is normal. If the horn noise is very loud, it indicates that the advertising machine drive board has been damaged, and it should be replaced immediately.

2: There is no response after the LCD advertising machine is plugged in the power supply: the LCD advertising machine does not respond after it is plugged in the power supply, which is a common problem in practical application. Specific method: whether the indicator light is on under the usage of ten thousand, if it is normal, it indicates that the power supply is electrified. Check whether the special power supply is powered on and whether the plug is off or loose.

3. Generally speaking, this phenomenon is caused by the signal interference of the display card, which belongs to the normal phenomenon. The user can adjust the phase automatically or manually.

4. LCD advertising machine screen flicker; in daily application, LCD advertising machine screen flicker is a problem that users often encounter. In this regard, the user should first check the magnetic field, power supply voltage and other external factors around the device. If it still can not be used normally, it is necessary to conduct a comprehensive inspection on the display card driver to eliminate the problem of program installation. After the above operation is invalid, users can also try to increase the refresh rate by 75Hz to see if it is feasible. If the above operations can not achieve satisfactory results, professional assistance is needed, and users need to send the equipment to the maintenance station for inspection.