trailer led display​ P8

FAQ 1: LED screen cannot turn on/black screen, how to solve it?
1. Check if the power supply is powered on and confirm that the switch and plug are functioning properly.
2. Measure the output voltage of the power supply (such as 5V/12V), and replace the power supply if it is abnormal.
3. Observe whether the control card indicator light is on, restart or replace the control card.

FQ 2： What should I do if a certain area of the screen is not displaying (black blocks/blurred screen)?
1. Re plug and unplug the cables and network cables in the problematic area.
2. Replace the faulty module or repair the driver IC.
3. Check if the HUB board or signal transmission line has poor contact.

FAQ 3： How to adjust color distortion (biased color blocks)?
1. Recalibrate the white balance (adjust the RGB ratio) through control software.
2. Check if the video source (such as HDMI cable) is working properly and replace it with a high-definition cable for testing.
3. Uniformly replace modules from the same batch or use professional color correction equipment.

FAQ 4： How to solve screen flickering or noise?
1. Set up a separate grounding wire for the screen to avoid sharing grounding with other devices.
2. Replace the shielded network cable or use an isolation transformer.
3. Check if the power supply is stable and avoid sharing circuits with high-power devices.

FAQ 5： What should I do if the software cannot connect to the control card?
1. Use an IP scanning tool to confirm the control card IP and ensure it matches the software settings.
2. Replace the network cable or serial port cable and check the status of the control card indicator light.
3. Reinstall the control card driver or upgrade the software version.

FAQ 6： How to fix video playback lag or content not switching?
1. Reduce video resolution or compress file size.
2. Use H.264 encoded MP4 format files.
3. Replace the controller or sub control equipment to ensure that the load capacity matches.FAQ 7: How to prevent frequent damage (dead lights) to LED light beads?
1. Install a voltage regulator or lightning protection device.
2. Improve heat dissipation conditions (such as adding fans and avoiding high temperature environments).
3. Check the waterproof structure of the outdoor screen and replace the aging rubber strip.FAQ 8： How to deal with screen startup difficulties in low-temperature environments?
1. Choose a wide temperature power supply (supporting -20 ℃~60 ℃).
2. Preheat at low brightness for 10 minutes before starting up to avoid direct full load operation.

FAQ 9： How to adjust uneven screen brightness?
1. Adjust the brightness parameters (0-255 levels) uniformly in the control software.
2. Replace aging modules to ensure that all modules are from the same batch.
3. Check the distribution of power cords to avoid overloading of a single power source.FAQ 10： How to maintain LED display screens in daily life?
1. Regularly clean the surface dust (using a soft bristled brush and alcohol wiping).
2. Avoid running at full brightness for a long time and enable the automatic dimming function.
3. Check the power cord, module splicing, cooling system, etc. every year