Originally Posted by Boothbay
Well, i bit the bullet and ordered from Amazon a hdmi coupler where reviewers said that it works perfectly by adding 2 smaller cables, and a 25' hdmi cable. As far as being told to make sure i get a good hdmi cable. I do not know what is considered good and what is considered bad, or troublesome. I do not know one end of the cable to the other end...both ends look alike to me. its amazing in this day and age of technology, a hdmi cable could be so erratic. We never had as far as I know any problems from the good old rca cables or even the component ones. Why do we as consumers have to put up with such frustrating moments over a cable?
I'm sorry I couldn't jump in quicker. Two high-speed 12.5' cables coupled together do not make a 25' high speed cable. Unfortunately. There is some loss associated with a couple (two additional termination points). So coupled cables do not work as well as one long cable. That said, there are times where couplers are needed but they should be avoided, if possible. At the very least, a coupler adds two more potential failure points where a cable can come apart.
An HDMI cable should *not* be erratic. Particularly one that is significantly less than 25' in length.
You should look for a cable that says "High Speed" and shows a type of certification in the advertising. If it doesn't say that then you don't know what you are getting. Monoprice and Blue Jeans Cable and a number of other have these certifications. Unfortunately even on Amazon (and especially one eBay) there are cables that aren't certified.
But, before we talk about cables. Can you take your cable box and move it close enough to the TV temporarily so that you could try one of your 6' cables, even if the cable box isn't connected to the coax? With a 6' cable you should be able to pass a signal (even if the signal says your coax is disconnected) from the cable box to the TV. If you can't then this is a different problem than a bad cable.
BTW, HDMI cables don't just "go dead". There has to be a cause. There is no material in the cable that should degrade over time.
However, cable boxes get new firmware without the user knowing about it. That new firmware can change the way the cable box works. So that is why it is very important to test with a small cable to see if you can pass a signal.
Also remember that HDMI was designed to 1) send a signal at high data rates (10.2 gbps is still fast today) and 2) prevent people from copying the signal. Ease of use for the consumer was intended (one connection for both video and audio) but sometimes all of the copy protection and the ability for the TV to tell the source what formats to send gets in the way of ease of use. With HDMI your TV tells you cable box what resolution and audio format (and other things) it can accept. That is supposed to make it easier for consumers but when that fails, it actually makes it much harder than the old days of component video.