4) Cable joins? Joins in your cable run can impact on
signal strength, resulting in reduced transmission that may
manifest itself in poor picture quality or a complete lack of
picture.
5) Signal Reduction – Are you using stranded patch
leads as interconnects between patch panels or
wall outlets? Such use reduces signal strength – we
recommend solid core straight through connections to be
used wherever possible.
6) 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.
7) Correct connection – It may seem obvious but
double check all UTP, HDMI, power and IR cables are
connected to the correct ports. 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) Cable wired to 568B standard? Is your cable wired
and terminated correctly and are those terminations
connected to the correct ports?
10) Electrical interference – HD transmissions are
susceptible to electrostatic interference so locations of
cables and devices should be considered
11) Do you get a picture if you connect 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 cable or matrix itself.
12) HDMI lead condition and quality – HDMI cables
and connectors are delicate and can be damaged much
easier than component or coax cable. Furthermore,
lead quality varies dramatically, particularly in lower price
brackets. Swap your HDMI leads and check operation –
damage to or quality of your leads could be the problem.
If in doubt, swap them over. Always take care inserting
and extracting your HDMI from matrix ports so as not to
damage the connectors or ports.
13) 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
TROUBLESHOOTING
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.
14) Blu-ray: Deep Colour – make sure Deep Colour is
turned on in your Blu-ray settings and displays.
15) 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.
16) Blu-ray: 3D – is the equipment used 3D enabled/
compatible? Is a 3D disc being played in a 3D enabled
Bluray player or through a compatible amplifier?
17) 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
which may solve any colour problems. If not, try changing
the HDMI cable between the source and the matrix to rule
out defective cabling.
Audio is transmitted within the video signal – there
is no separate audio track – so generally a problem
with sound will be accompanied by a problem with
picture. However, if technical issues with audio are
experienced, the cause is typically communication
between sources, displays and/or AV receiver
settings.
No sound or poor quality audio
1) If using an AV receiver, check your source input
assignment – do you have specific speaker sets or zones
enabled? Some AV receivers allow individual speaker
selections assigned to specific zones in the set up so
check the speakers used are fully connected to the
amplifier and correctly assigned within the system set up.
Note: If you experience problems when an AV receiver is
used, the cause is usually the settings of the AVR itself.
Refer to the AVR manufacturer’s guidelines on the correct
settings to use for your requirements.
2) Consistency of audio output between devices – Is
there any discrepancy between the audio output of the
source, the audio or zonal settings of the AV receiver and
the speaker configuration used needed for successful