6
4K Optical Fiber Extender
Troubleshooting & Maintenance
Problems
Causes
Solutions
Color losing or vague/
double image in HDMI
display
Poor quality of the HDMI
cable (if used)
Change for qualified cable.
Power led is off, operations
don’t work
Not been powered
Power up the unit
Poor contact of USB port
Make sure power adapter
is in well contact
No output on the display
Source/ Display is off
Turn on the source/ display
Poor contact of HDMI ports
Check the HDMI ports one
by one to make sure
they’re in well contact.
If your problem persists after following the above troubleshooting steps, seek further
help from authorized dealer or our technical support.