13
www.tlnetworx.com
TL-SM3x1-HDV User Manual
8.
Troubleshooting & Maintenance
Problems
Causes
Solutions
Output
image
with
snowflake
Bad
quality
of
the
connecting cable
Try another high quality
cable.
Fail or loose connection
Make sure the connection
is good
No output image when
switching
No signal at the input /
output end
Check with oscilloscope or
multimeter if there is any
signal at the input/ output
end.
Fail or loose connection
Make sure the connection
is good
The switcher is broken
Send it to authorized
dealer for repairing.
POWER
indicator doesn’t
work or no respond to any
operation
Fail connection of power
cord.
Make sure the power cord
connection is good.
Static becomes stronger
when
connecting
the
video connectors
Bad grounding
Check the grounding and
make sure it is connected
well.
Cannot control the device
by front panel buttons.
These buttons haven’t
been customized in IR
control mode.
Re-customize the button
function.
The front panel buttons
are broken.
Send it to authorized
dealer for repairing.
The buttons cannot be
customized via IR learning
function.
The device has already
been broken.
Send it to authorized
dealer for repairing.
If your problem persists after following the above troubleshooting steps, seek further
help from authorized dealer or our technical support.
