Page
34
of
45
Call the AVPro Team at –North America 877-886-5112 Interna1-605-274-6055
Troubleshooting with SIX-G - inject lower resolution signal until sparkles go away. In distributed
system test all source-sink-repeater test points for defective CAT run or HDMI cable.
Picture but no Sound
•
Mismatch between source or repeater and sink for audio CODEC
•
Occurs when HDCP handshake not completed
•
Try forcing 2 channel audio if possible
•
Make sure AVR and Display have latest firmware
Troubleshooting with SIX-G - inject various audio formats until sound returns - this will verify that
connectivity is there. Use SIX-G to verify that the EDID in the display has the correct audio format
listed. Usually this symptom is caused by outdated firmware - make sure and update all devices.
Matrix Switch in Mixed Signal Environment - Some displays have video, others do not
•
By their very nature - without a scaler in line - mixed signal distribution systems will lock
on to the lowest common resolution based on EDID. A source device can only output one
signal through the HDMI cable at a time. If you force a higher resolution than the display
can handle you won't get a picture on capable displays.
•
Set all displays to lower resolution is an option.
•
With 4K UHD and HDMI 2.0 and HDCP 2.2 must be careful - evaluate all components for
compatibility - both resolution & timing plus HDCP compliance.
•
Program control system so 4K UHD sources with HDCP 2.2 are only routed to compliant
displays.
