Quick summary: I basically want to clone two TVs--one in our master bedroom, and one in the master bathroom ~15' away. I'll have two or three different HDMI inputs I'll switch between, and an HDMI splitter so I can feed the same signal to both TVs. I ran an Aurum 40' RG6 and a Aurum 40' HDMI cable inside the walls and through the attic. It worked fine in testing before the run. After the run, only the RG6 cable is working properly. The HDMI signal to the second TV is intermittent.
Source: Old Sharp Blu-ray Player + eventually a DirecTV Genie Client (C31 or C41) and maybe a streaming (Roku or similar) box
Switch: 3x1: www.amazon.com/gp/product/B0015YWKYY/
Splitter: J-Tech Digital 1x2 Powered: www.amazon.com/gp/product/B002WP2QGM/
TVs: Qty = 2 of Coby 720p 32" LED HDTV: http://www.amazon.com/gp/product/B008H2FQSE/
Cable: Aurum Ultra Series High-Speed 40': www.amazon.com/gp/product/B007VQEIBS/
Wall plates: Sterren HDMI pigtail: http://www.amazon.com/gp/product/B003E2Z060/
(Yes, I got some Amazon gift cards for Christmas... The two TVs were a Black Friday Lightning Deal.)
Currently, I'm feeding both TVs via the analog TV2 output from a Dish Network 722k HDDVR in the living room. I'm using good quality RG6 cabling, and a standard RF splitter. That part is working fine.
I tried out the full HDMI signal path before running the 40' HDMI cable in the walls and across a few feet of attic space. It worked fine coiled up on the dresser. I had the blu-ray of How To Train Your Dragon running for hours, with no dropouts on both TVs. Both TVs were sitting side-by-side, and they looked identical. No sparkles, no drop-outs. It looked great!
However, after I ran the cable through the wall, I started having problems with HDMI on the second TV. When it works, it looks perfect. No sparkles. However, the drop-outs are very frequent. In fact, the TV spends more time displaying: "No signal." than anything else. Sometimes it displays "720p 60 Hz" with no A/V. (I have the blu-ray player set to 720p, since that is what the native resolution of the TVs.) Sometime, usually for a few seconds (and sometimes for minutes), it shows perfect video and sound. (No sparkles.) There is some Romex in the attic running power to some lights and what-not, so I figured the long HDMI cable was probably picking up some interference. I pulled everything out of the signal chain except for the blu-ray player, the 40' HDMI cable, and the second TV, and it's the same story. I added a couple of chokes to the long HDMI cable, but I didn't really help.
So, I'm thinking I need a beefier cable. I was thinking about the 22 AWG professional cable from Monoprice: http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10240&cs_id=1024002&p_id=4034
But then I found out about Redmere cables, and I started to wonder if that would be a better choice? http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10240&cs_id=1025501&p_id=9171
They don't cost *that* much more, and they are rated for higher speed (not that I need it for the 720p TVs I have now...) But, are they better at negotiating the HDMI handshake in a potentially hostile EMI environment? I don't really need an extra flexible or slim cable, as I have the HDMI pigtails, so that's not really an issue.
I've seen the powered baluns, wireless HDMI transmitter/receivers, HDMI distribution amps, etc. But, I don't think those are called for here? (If they are, I may just get an extra C31/C41 client wired up when I switch back to DirecTV and call it good!)
Any advice? Thanks!