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11. Troubleshooting & Maintenance
Problems
Color losing or no video
signal output
No output image when
switching
No output on the
amplifiers connected to
audio output ports
Cannot control the
device via front panel
buttons
Cannot control the
device via IR remote
Power Indicator remains
off when powered on
EDID management does
not work normally
Causes
The connecting cables may
not be connected correctly
or it may be broken.
Fail or loose connection
No signal at the input /
output end
Fail or loose connection
Input source is with HDCP
while the HDCP
compliance is switched off.
The display doesn't support
the input resolution.
The amplifiers are not able
to decode HDMI audio
Front panel buttons are
locked.
The battery has run off.
The IR remote is broken.
Beyond the effective range
of the IR signal or not
pointing at the IR receiver
Fail or loose power
connection
The HDMI cable is broken
at the output end.
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4K 4x4 HDMI2.0 Matrix Switcher
Solutions
Check whether the cables
are connected correctly and
in working condition.
Make sure the connection is
good
Check with oscilloscope or
multimeter if there is any
signal at the input/ output
end.
Make sure the connection is
good
Send command /%[x]:[1]. to
change HDCP compliance
status.
Switch for another input
source or enable the display
to learn the EDID data of the
input.
Change for amplifiers that
are capable to decode HDMI
audio.
Send command /%Unlock; to
unlock.
Change for new battery.
Send it to authorized dealer
for repairing.
Adjust the distance and
angle and point right at the
IR receiver.
Check whether the cables
are connected correctly.
Change for another HDMI
cable which is in good
working condition.
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