Originally Posted by mr.kludge
Thanks for the tips. The things you mention are ALWAYS the first thing I do and I've been doing this for a very long time (over 40 years in the a/v and IT biz). I have also NEVER had an issue with HDMI since I always do the stuff required. The switch I have is another story but a replacement is on it's way. Locking up and not due to cables or sources but some issue with a component that the manufacture is aware of and fixed in the latest rev.
And I beg to differ on cable cost/quality etc. I like the better designed and built cables but as I always say if you are buying your cables from ANYWHERE than Monoprice you are likely wasting your money. There is NOTHING in the current HDMI specs that require anything more than a "high speed" certified cable. As you mention though there are things that can go wrong. I always straighten out cables and get the kinks out before use and keep caps on when not in use to help with corrosion, dust, bending etc. and keep them in air tight bags. First I have EVER heard of short cables causing issues but some of this new fangled HDR and evolving stuff is pretty complicated and new. The new HDMI 2.1 with eARC AND UP TO 10K looks like it going to turn everything upside down.
Oh and it is for sure the TV. It just isn't capable of what I want to accomplish. It only cost $400 so I can't complain ;-) If I want it all I will have to grab that $1,500 LG OLED that I was drooling over when I found this one.
OK, on your TV diagnosis. For the cables, Premium Certified does not have to be expensive. Both Monoprice and Blue Jeans cable sell reasonably priced cables of this type.
There is a real difference between the snake oil of the exotic (high priced) HDMI cables and the Premium Certified program. The design and testing specs promulgated by HDMI.ORG for their Premium Certified program are their best yet. They cover all sorts of things better than the prior generation of "High Speed" HDMI cables, including even things like mechanical robustness in the face of bending of the cable. Although it may not make a difference in your situation, I don't want to leave this unstated: Anybody buying an HDMI cable today for *ANY* reason should be looking to get a Premium Certified cable -- at a reasonable price of course.
What's going on with the shorty cables is as follows:
HDMI is just a cheap, twisted pair copper, electric transport. The signals ARE going to degrade as they pass along the length of the cable. What makes the cables still work -- even in the face of today's higher bandwidth signals -- is equalization algorithms built into the transmitter and receiver chips at either end.
Those algorithms attempt to counter the cable-length-related signal degradation. And to DO that, they need to make some assumptions about how much degradation is likely to occur.
And the assumptions have 6 foot length built into that model.
So longer cables have MORE degradation, but still close enough, and short cables have LESS degradation, but not so MUCH less as to cause problems.
Nevertheless, 6 foot length is the sweet spot. Just as some people will have no problems with their long cables, other folks will have no problems with their short cables. But using a 6 foot long cable whenever possible maximizes your odds.