2 Minutes LED Display Flickering Fast Troubleshooting (2023)!

In the process of LED display application, we will encounter the problem of LED display flickering. The solution for fixed position LED screen flickering and the solution for full-screen flashing are listed below!

Fixed Position LED Screen Flickering Solutions

Fixed Position LED Screen Flickering Solution
PhenomenonPossible CausesDescriptionSolution
 Fixed Position Screen FlashingScreen flashing in units of network portsOutput network port problemNetwork port failureReplace the network port or sending cards
The network port exceeds the loadA network port exceeds the loadRedesign the display wiring scheme
Network cableThe network cable connection is loose or the quality is not goodReconnect or replace the network cable
Screen flashing units of  receiving cardsPower supplyUnstable power supply voltageReplace the power supply of the receiving card
Network cableThe network cable of the receiving card is loose or the quality is not goodReconnect or replace the network cable
Receiving cardConfiguration file errorRead back from the normal receiving card and send it separately
Firmware program version errorUpgrade to the correct version
Receiving card hardware failureReplace receiving card
HUB adapter boardAdapter board hardware failureReplace the HUB adapter board
Screen flashing  by modulePower supplyUnstable module power supplyReplace the cable of the power or replace the power supply directly
HUB adapter boardThe interface of the HUB adapter board is faultyReplacing the HUB interface or replacing the adapter board directly
Flat CableThe flat cable connection is loose or the quality is not goodRe-fix the cable or replace the cable directly

Random Full LED Panel Flickering Solution

Random Full LED Panel Flickering Solution
PhenomenonPossible CausesDescriptionSolution
Full Screen Random FlashingComputerGraphics card output failureTry changing computer
The output frame rate of the graphics card does not correspond to that of the sending cardSet the output frame rate of the graphics card to be the same as that of the sending card
Video cableLoose connections or damaged cableReplace the video cable
Sending cardInput source interface failureReplace the interface or replace the sending card directly
The output interface of the main network port is faultyReplace the network port or replace the sending card directly
Sending card hardware problemReplace sending card
Receiving CardConfiguration file errorResend the correct configuration file
Firmware program version errorUpgrade to the correct firmware version
Power SupplyUnstable power supplyReplace the power supply

Novastar Video Tutorial About Tourbleshooting Screen Flickering

Here is an official video tutorial from Novastar on how to solve screen flickering issues. The video is quite long and the first part covers basic knowledge about LED control systems and solutions for blackout issue. 

For those who already have some knowledge, you can fast-forward to the twentieth minute directly.

In this article, we discussed how to figure out problems of LED display flickering, and the methods of positioning questions and corresponding solving ways. First, we need to find out whether the flickering problems happen on the whole screen or on some fixed parts of the display. Then we can suit the remedy to the case! For more articles about LED control system and LED display screen, just follow our blog section!