AVG-UHD4K-44 V2
8 Troubleshooting & Maintenance
Problems
Potential Causes
Solutions
Color loss or no video
signal output
The connection cables may not
be connected correctly or may be
faulty
Check whether the cables are
connected correctly and in
good working condition
Failed or loose connection
Make sure the connection is
firm
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
Failed or loose connection
Make sure the connection is
good
Input source is with HDCP while
the HDCP compliance is
switched off.
Send command /%[x]:[1]. to
change HDCP compliance
status.
The display doesn’t support the
input resolution.
Switch to another input source
or enable the display to learn
the EDID data of the input.
No audio output
The amplifier is not able to
decode HDMI audio
Change amplifier
Cannot control the device
via front panel buttons
Front panel buttons are locked
Send command /%Unlock; to
unlock
Cannot control the device
via IR remote
The battery has run out
Change battery
The IR remote is faulty
Send it to an authorized dealer
for repairing
Beyond the effective range of the
IR signal or not pointing at the IR
receiver
Adjust the distance and angle
and point right at the IR
receiver.
Power Indicator remains off
when powered on
Failed or loose power connection
Check whether the cables are
connected correctly
EDID management does
not work normally
The HDMI cable is broken at the
output end
Change for another HDMI
cable in good working
condition
There is a blank screen on
the display when switching
The display does not support the
resolution of the video source
Switch again
Manage the EDID data
manually to make the
resolution of the video source
automatically compliant with
the output resolution.
Cannot control the device
by control device (e.g. a
PC)through RS232 port
Wrong connection
Check to ensure connection
between the control device
and the unit
Wrong RS232 communication
parameters
Type in correct RS232
communication parameters:
Baud rate:9600; Data bit: 8;
Stop bit: 1; Parity bit: none
Broken RS232 port
Send it to an authorized dealer
for repair
If your problem persists after following the above troubleshooting steps, seek further
help from your authorized dealer.
