FAQ

Common problems of LCD advertising machine (1)

Source: KONWHAI TOUCHAuthor: KONWHAI Date: 2020-09-21 Click:

  •      The LCD advertising machine uses LCD monitors to play video advertisements, which is especially suitable for high-end brands' integrated multimedia technology to deliver a full range of product information and promotional information to consumers. Improve the display rate and display effect of products in the sales terminal, and stimulate impulsive purchases.
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  •      In the process of using the LCD advertising machine, there will always be some small problems that bother us. Calling the after-sales service will take a long time to deal with the problem, so a little problem can often be solved by yourself.
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  •      So, in order to let you use the LCD advertising machine better, in order to let you use it comfortably, KONWHAI electronic technology technicians summarized the common problems of LCD advertising machine and shared with everyone.
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  • Common problems of LCD advertising machine (1)

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  •   Common problems of LCD advertising machine (1) Solution: 
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  • 1. What should I do if there is no sound from the LCD advertising machine?
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  •      Solution: Take off the LCD advertising player after power off, open the back cover, use a multimeter to measure whether the power amplifier on the drive board is energized and normal, and then check whether the speaker connection line is normal, if the advertising player drive board power amplifier is not normal, then Replace the driver board; if the speaker is abnormal, replace the speaker. Generally speaking, the speaker cable is the easiest to fall off. If it falls off, solder it with a soldering iron. If the speaker is noisy, the advertising player drive board is damaged. Replace the drive board immediately.
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  • 2. There is no display on the screen, and the indicator on the front panel is flashing. What should I do?
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  •      Solution: Check whether the signal line between the LCD advertising machine display and the computer is firmly connected, and check whether the signal line connector has any broken or bent pins.
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  • 3. The screen is blank and displays "Signal out of sync range" or "OUT OF RANG". What is the reason?
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  •      Solution: When the signal sent by the microcomputer exceeds the display range of the display, the display detects an abnormal signal and stops working. The user can turn off the display first, then turn it on, and then reset the output frequency of the microcomputer.
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  • 4. Can LCD work continuously for a long time?
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  •      Solution: There is no problem with LCD running for a long time. In fact, compared with ordinary CRT monitors, LCD has less heat and power consumption, making it more suitable for long-term operation. However, from the perspective of maintenance, LCD should be given some time to "breath". After all, LCD is a relatively delicate product, and problems can not be solved as easily as CRT monitors.
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  • 5. What should I do if the resolution of the monitor does not increase?
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  •      Solution: In most cases, it is a usage problem. First check whether the driver of the graphics card and the monitor has been installed, and then check whether the graphics card and the monitor can reach the performance you require according to the instruction manual. If everything is normal, then the display is faulty and you can only contact the repair center to solve it.
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