I've been reading through some of the many threads here on issues with sending HDMI over Cat5e, but I think this may be a more specific problem so I'd really appreciate any advice.
We have a 4x4 HDMI matrix from CPC Farnell - http://cpc.farnell.com/_/hdsmx404/switch-hdmi-4x4/dp/CS20232?in_merch=Products%20From%20This%20Range
and we're using these baluns - http://www.hasense.com/html_products/HDMI-Super-Extender-(-By-CAT-5e6cable-50M)-21.html
to send HDMI from the matrix outputs to another room. The run is fairly long and includes a Cat5 patch bay and a wall panel in the other room.
I'm having problems with dropouts, "snow" and other forms of interference appearing onscreen. I'm using Cat5e cables I've terminated, replaced and re-terminated myself at every point in the chain. Ditto with HDMI cables, though these are pre-made. In other words I'm pretty satisfied that the cables are fine. I've also swapped out the baluns for new ones to no avail.
The baluns come with a 5V power adapter, but plugging this in gives me a weird problem. When I power up the baluns (power input is located at the receiver end) I can't turn the HDMI matrix off - that is, flipping the power switch on the matrix doesn't seem to do anything as all the LEDs remain lit. When I remove the power supply from the balun the lights on the matrix go out. Is the balun sending 5V back to the matrix? I've left it off for now, but I'm not sure if power is actually needed for the baluns to work properly or whether it just powers the IR magic eyes (I'm not using these).
Close to throwing in the towel and just running some heavy duty HDMI cable through the loft. Any help would be hugely appreciated though.
Many thanks in advance,