HDMI Matrix plague - AVS Forum
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post #1 of 6 Old 09-10-2012, 10:38 AM - Thread Starter
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Hey everyone, tried to find an answer to this specific set up but can't seem to find anything!

Set up:

4 Sources (2 Bell sats, samsung blu-ray, apple tv3)
4 TVs (all samsung, 2 of which are 3D capable however we are not using 3D)
1 integra 30.4 receiver for theatre tv.


So...

Sources > Keydigital 4x4 matrix > integra > Theatre TV
Sources > keydigital 4x4 matrix > Master Bed TV

The issue I am having is that the 2 3D capable tv's seem to get scrambled video or stuttering video across all sources periodically. We've swapped out all Baluns and even the matrix piece itself.

We have tested Cat5 cables and swapped out HDMI cables.

This issue is only present on the 2 3D capable TV's, the non 3D capable ones work completely fine while the 2 get stuttering video.

Is this an EDID and/or HDCP problem?
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post #2 of 6 Old 09-10-2012, 12:37 PM
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Make sure all the power supplies are plugged in and working.

In another thread where someone reported a similar problem, it was determined that although the documentation for their baluns and switches claimed that their external power supplies were optional, they actually were required. When power was connected, the glitches went away.

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post #3 of 6 Old 09-10-2012, 03:01 PM - Thread Starter
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Hey thanks for the reply.

Yeah we make sure even if power supplies are optional we use them when dealing with baluns. If only it were that simple frown.gif . We've also tried a different brand of matrix switcher and still same result.

More info from the client today, apparently even if video glitches or stutters on the theatre tv downstairs the audio remains perfect. confused.gif
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post #4 of 6 Old 09-11-2012, 09:01 AM
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Have you tried inserting HDMI extender "amps" in the cable runs connected to the 3D TVs?

Of course, the extenders would have to be rated for the bandwidth needed by 3D. HDMI video glitches usually are caused by the display receiving a degraded signal. 3D requires quite a bit more bandwidth than 2D does, so would tend to be more sensitive to marginal signals.

I've experienced dropouts in 2D 1080p60 video which didn't affect the audio, so by itself I don't think that's a very helpful symptom.

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post #5 of 6 Old 09-11-2012, 02:46 PM - Thread Starter
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post #6 of 6 Old 09-11-2012, 03:03 PM
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I was thinking of something a little less comprehensive, more like this:
http://www.atlona.com/Atlona-HDMI-Equalizer

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