TROUBLESHOOTING
6) Cable Choice and Signal Reduction – Are stranded
patch leads being used as interconnects between patch
panels or wall outlets? CCA (Copper Clad aluminium)
cables being used? These can reduce transmission rates
by up to 40% – we recommend solid core straight through
with minimum connections used wherever possible.
7) Resolution – If you reduce the resolution of the
source, do you get a picture? If so, this suggests a
discrepancy between source and display resolution or
a bandwidth capacity issue with your cable. Check that
your inputs and outputs share the same resolution and
that the signal is being successfully transmitted along your
cable run.
8) Correct connection – It may seem obvious but
double check all UTP, HDMI, power and IR cables are
connected to the correct ports.
Note: Even a fraction off can be the difference
between a perfect picture and a blank screen.
Double check all connections are firmly made in the
correct ports.
9) Check LED indication on Receiver for confirmed
operation. Are LEDs lit and/or behaving properly (static
or flashing - see Panel Description for details on LED
indication). If LEDs are not correctly lit, connections,
cable/terminations, interference , distance etc. should be
investigated. Swap cables out if necessary.
10) Cable wired to 568B standard? Is your cable wired
and terminated correctly and are those terminations
connected to the correct ports?
11) Electrical interference – HD transmissions are
susceptible to electrostatic interference so locations of
cables and devices should be considered
HDBaseT technology is more resistant to interference
compared to regular transmissions but care should still be
taken during installation - could any form of interference
be generated? If so, attempt to remove the source of
electrical interference or move the cable run to decrease
the effects of the interference.
12) Is a picture achieved when connecting the
source directly to the display? If not then the problem
could lie with the input or output device rather than the
means of distribution i.e. the display rather than cable,
matrix or receiver itself.
13) HDMI lead condition and quality – HDMI cables
and connectors are delicate and can be easily damaged.
Furthermore, lead quality varies dramatically, particularly
in lower price brackets. Swap your HDMI leads for high
speed rated HDMI cables and check operation. If in
doubt, replace them. Always take care inserting and
extracting your HDMI cables. Keep cables lengths as
short as possible.
14) Picture snow/HD ‘noise’ – represents a poorly
established signal that may be caused by poor quality
terminations or excessive cable lengths. Try swapping the
display adaptors from a location you know is functioning
properly or swapping the outputs of the matrix switch
used.
If the problem remains on the same screen this may be
caused by a connection problem between matrix and
display – turn off all equipment and swap the signal
carrying cables at both ends to ascertain if the cable or
termination is at fault.
Breaks in the lines of transmission e.g patch panels, wall
outlets, stranded cable use or excessive cable length are
likely to reduce stability and range.
15) HD Noise (NO image) may be an HDCP Issue
between the source and display but poor cabling can also
cause this due to poor communication.
16) Blu-ray: Deep Colour – Deep Colour, 1080p and 3D
is supported by the line of transmission in your installation.
17) Blu-ray: Resolution – if a reduction of resolution to
720/1080i produces an image, cable issues such as
interference, patch panels, wall outlets, stranded cable
use or excessive cable length are likely restricting
transmission of a full 1080p signal.
Transmissions should support 1920x1080p @60Hz - if
problems are experienced at 60Hz, try lowering to 50Hz.
18) Blu-ray: 3D – is the equipment used 3D enabled/
compatible? Is a 3D disc being played in a 3D enabled
Blu-ray player or through a compatible amplifier?
19) 4K - Are you trying to pass a 4K signal? This device
does not support UHD 4K resolutions
20) Colour distortion – a pink or green screen indicates
an incompatibility between colour spacing formats – the
commonly used RGB or YUV used by older displays.
Some sources allow switching between RGB and YUV
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