BG-Air4Kast Quick Troubleshooting Guide

Receiver (RX)

• LEDs
  
  
  • Power: Blue = On
  • WiFi: Slow Flash = Waiting | Solid = Connected | Rapid Flash = Pairing
  • Signal: Off = No HDMI | Solid = Transmitting | Rapid Flash = Factory Reset
    
    
• Button: Press = Change channel | Hold 5s = Pairing | Hold 10s = Factory Reset
• Connections: Antennas, Micro USB (firmware), HDMI Out, IR In, 5V/2A Power

Transmitter (TX)

• LEDs/Buttons: Same functions as RX
• Connections: Antennas, Micro USB (firmware), HDMI In, HDMI Out (loop), IR Out, 5V/2A Power
  
  

Common Issues

No Signal / Sync

• Restart transmitter
• Use certified high-speed HDMI cables
• Add HDMI DA with static EDID if sync drops frequently in the system
• Check TV/Game Mode/ALLM/VRR settings
  
  

Latency

• Typical delay up to ~300ms
• Low-latency firmware available (may reduce quality)
• Compare to direct HDMI; mouse movement shows delay best
  
  

Audio Delay

• TX (source): some delay possible
• RX (display): minimal delay
• Test with direct connections to confirm
  
  

Signal Stability

• Maintain line of sight
• Lower resolution/disable HDR if unstable at 4K60
• Avoid unnecessary extenders/converters
  
  

System Notes

• Supports up to 4 frequencies
• Always attach antennas
• Micro USB = firmware upgrades only
• IR ports support remote control pass-through