I had issues with a customer's signal dropping out when a light was turned on. It also would turn on when the AC would come on. He also said when the system was completely off, the tv would turn on when they turned on a light in the bathroom!
Thanks to this forum I had a good idea that it was something to do with the balun. Everyone I spoke to thought it was an issue with the TV. I switched everything to component since that's what the customer had installed with his previous tv (new TV is a samsung plasma). Once I found out that the problem disappeared when on component I knew that it was the hdmi balun. I also had tried putting a power conditioner in (that didn't help at all).
This morning I checked the attic (i was not the one who installed the cat 5) I made sure all the cat 5 was away from all electrical wires. I did have to move it a bit, but the cat5 was no where near the bathroom area that would cause the dropout almost 100% of the time. I then re-terminated the rj45 plugs on the cat5's. My boss had me install the RJ45EZ jacks the first time. The manufacturer for the balun (SnapAV HD-2CAT-1080P-130) recommends using the regular RJ45's as the EZ version can create crosstalk.
I tested it & it worked great! I went around flipping switches and had the AC kick on a few times & it never dropped picture.
these are the components in the system: Samsung Plasma TV, snapav HD-2CAT-1080P-130 balun, UTP cat5, Anthem MRX300, Oppo BDP-93, and a directv box, all video being switched through the anthem. All HDMI sensing is off.
getting 1080p off the oppo, 1080i on the directv (it doesn't do 1080p even though in the settings it says it will)
Be aware of individual instructions for each balun, almost everything we install is terminated to 568A, but this particular balun needs the RJ45's terminated to 568B.
One thing I noticed is on SnapAv's single wire baluns it says to use shielded wire, on the dual cat5's it doesn't specify that. So far in my experience the dual UTP cat5 is working out after changing the RJ45's.
Thanks to everyone who posted on this thread, it helped me alot!