Six common problems of LCD advertising display
Explore 6 common LCD advertising display problems & solutions. Ensure seamless performance for high-impact digital signage campaigns.
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Six common problems of LCD advertising display

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Struggling with LCD advertising display malfunctions? This guide reveals the top 6 technical issues—from screen flickering to touch failures—and actionable fixes to keep your digital signage running smoothly.

LCD advertising display is a new platform for advertising communication at present. Its fields include transportation hubs, shopping malls, museums, banks and many other public places.

LCD advertising displays are revolutionizing how brands engage audiences—but even the best digital signage can face technical hiccups. From flickering screens to connectivity drops, these issues can disrupt your marketing momentum. Whether you’re a retailer, hotel, or corporate hub, understanding common LCD advertising display problems ensures uninterrupted, high-impact visuals. This guide dives into six frequent challenges, offering actionable fixes to keep your displays sharp, responsive, and audience-ready.

Six common problems of LCD advertising display:

1. The LCD advertising display did not respond after the power supply

First, check whether the dedicated power supply is powered on, which is a common problem in practical application.

You can try to remove the back cover of the LCD advertising display for inspection to see if the wire is falling off or loose.

Test method: Use a multimeter to measure whether the indicator light is normal. If it is normal, it will prove that the power supply is powered and eliminate the problem of power failure.

Secondly, check the power-on condition of the decoding board, the advertising machine driver board, the high-voltage bar, the horn and the LCD screen in sequence to see if the power-on condition is caused by the failure of accessories.

2. Automatic shutdown of LCD advertising display after starting up

Primary identify LCD advertising player menu settings if in punctuality off state;

Machine rendering short circuit representation replacement motherboard;

Flyback transformer operation not normal and replacement flyback transformer;

Remote control doesn’t work well.

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3. When switching on and off the LCD advertising display, the screen presents disturbing Miscellaneous lines.

This situation is caused by the signal disturbance of the graphics card and is attributed to the normal appearance.

This question can be dealt with by automatically or manually adjusting the phase.

4. When the LCD advertising display is started, there is no sound and the screen is not displayed.

At this time, it may be the problem that the indicator light on the front panel flashes.

If there is no sound, you can open the back cover of the LCD advertising display, use a universal meter to check whether the drive board is powered on, and then check whether the connection of the horn line is normal.

If the horn has a loud noise, this means that the drive board of the advertising machine has been damaged and can be replaced.

If there is no display screen on the screen, the user can check whether the signal connection between the Monitor and the computer is firm enough, and carefully check whether there is any problem with the interface of the signal line, if there is a pin bending, damage phenomena such as breaking should be replaced in time.

5. The screen of LCD advertising display flashes seriously

Please check whether there is magnetic field disturbance around the LCD advertising display;

Please check whether the power supply voltage is stable;

Please check the display device and graphics card driver;

Improve refresh rate by 75HZ;

If it still doesn’t work, it can only be repaired by the LCD advertising display manufacturer.

6. Color difference occurs when the LCD advertising display is used for a period of time.

How can we slow down its light decay without being bothered by it.

First, control the power level, and control the local oscillator output power in the microwave superheterodyne receiver to obtain the best noise coefficient and frequency conversion loss to achieve the best receiving effect.

In the microwave receiver, automatic gain control is realized to improve the dynamic range. Jump attenuator used in radar anti-jamming:

It is a kind of variable attenuator with sudden attenuation energy. It does not introduce attenuation at ordinary times and suddenly increases attenuation when encountering external interference.

The above six points are aimed at the minor problems that may occur in the use of LCD advertising display.

Mastering LCD advertising display maintenance not only resolves immediate issues but also future-proofs your investment. Regular updates, proper calibration, and professional support can dramatically enhance performance and longevity.

Still experiencing glitches? Our team specializes in LCD advertising display solutions tailored to your needs. Contact us today for a free consultation—let’s optimize your digital signage for flawless, attention-grabbing results.

Unmarked pictures come from Internet, and source: … …
Overheating often results from poor ventilation or prolonged usage. Ensure proper airflow, avoid direct sunlight, and use energy-saving modes to extend your LCD advertising display’s lifespan.
Calibrate the touchscreen via settings, update firmware, or check for physical damage. For persistent issues, consult a technician specializing in LCD advertising displays.
Minor dead pixels may self-correct, but severe cases require professional repair or panel replacement. Regular maintenance reduces risks.
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