Follow these steps to troubleshoot a black screen issue:
- Check the power supply:         
Verify that power is flowing from the wall outlet to the device.
 - Verify the connection:        
Check the video and power cables from the device to the display to ensure they’re securely connected.
 - Try a different display:        
Connect the device to a different monitor or TV to test the output.
 - Replace the cables:        
If possible, replace the current cables with certified cables to ensure they’re compatible.
 - Reset the device:        
Reset the device by restarting it or unplugging it for a few minutes.
 
