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11.3. No Signal from any Source to any Display
If a display connected to a matrix output will not sync to any source, the issue is usually either an incompatible
EDID on all inputs or a problem with the cable connecting the display to the matrix switcher:
•
Learn the EDID of the problem output to all inputs.
•
Replace any HDMI cables with known working cables.
•
Bypass all other equipment and wire directly from the output of the matrix to the input of the display with the
shortest HDMI cable possible to eliminate other equipment as the cause of the issue.
•
Connect the display wiring to a different matrix switcher output.
•
Connect each source directly to the display using an HDMI cable and test to be sure the display and its input
port work correctly with sources. If this works there may be HDMI wiring issues.
11.4. Audio Issues
If a display on an output using 2-channel stereo audio is switched to an input with an EDID set to surround sound
audio format, audio at the display speakers may be garbled, missing pieces of the audio track, or muted altogether.
This symptom indicates that the display cannot down-convert the audio stream from the source. To fix this issue,
the source must be set to output only 2-channel stereo audio.
This may result in less-than-ideal audio quality in zones with surround systems; however with some sources
like cable or satellite boxes, surround sound audio isn't critical to the end user experience, so these sources can
send stereo audio through the speaker system with no perceived difference. For sources like Blu-ray players or
streaming devices where sound quality is critical, the compromise would be to add a second source of the same
type to the system so that one is set to stereo and one is set to surround sound.
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