How to troubleshoot huidu banner screen that does not working no picture?

Published on September 3, 2025

After the LED display screen is assembled on-site, it may not have been constructed entirely according to the project drawings due to certain reasons, necessitating further debugging of the large LED screen on-site to resolve issues.

How do we troubleshoot when the large screen indicates certain cabinets are not functioning?

1. We need to observe the status of the on-site LED display, analyze the issue, and make a preliminary assessment of the problem.

Problem Description	Possible reasons
The entire LED display is not functioning.	Possible causes: Main power is not turned on, computer is not outputting a video signal source, or the sending card layer settings are incorrect.

Problem Description	Possible reasons
Partial Display Failure	Possible causes: The actual load on the network cable exceeds the maximum pixel load capacity, or the switching power supply/receiver card in a specific cabinet is damaged. Additionally, if the resolution output by the transmitter card is lower than the actual resolution of the LED display, it may cause partial malfunction of the display.

Problem Description	Possible reasons
Individual Cabinet Not Functioning	Receiver card configuration file missing/module not installed correctly

If the issue is confirmed to be within a specific LED cabinet, an engineer will need to enter the LED display for troubleshooting. I recommend using the Ourdoor Advertising series LED display for outdoor installations, as each module can be quickly disassembled and reassembled for convenient maintenance.

2.If your issue isn’t covered in the descriptions above, you can try performing a full configuration of the LED display to troubleshoot the problem.

Install the HD set software, re-read the receiver card firmware program, and verify the firmware version and quantity of receiver cards.
Load the configuration file provided by the supplier and resend the configuration file.
Open the screen connection and check if any output network ports exceed the maximum load capacity.
Verify the computer outputs a video signal and that its resolution matches the display panel’s resolution.
Confirm the sending card’s signal source selection is correct and that the output resolution is set to equal or exceed the display panel’s resolution.

After a thorough troubleshooting process, your LED display project should have identified the issue.

If the issue persists, you may provide us with detailed information about the problem. We will conduct a free remote diagnosis and debugging for you. Contact Us ->

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