Hello everyone and special thanks for your comments. I have a Denon AVR5200W and it has been working just fine EXCEPT, I used a Monoprice Redmere HDMI Cable as I started using a projector for my main viewing (and the distance was greater than 45 ft. This worked fine for 5 months until, while watching a show one night in September 2020, the HDMI signal was lost (just immediately gone). Typical blue screen with "HDMI 1 no signal". I then plugged my computer directly into the projector (with a different HDMI cable) and the projector was working just fine. I had an alternate HDMI cable that I directly wired from the Denon AVR to the projector and again typical blue screen with "HDMI 1 no signal". I changed to the alternate HDMI port on the AVR and again "no signal". I took the Denon receiver to a certified technician and explained what happened. (I had used him prior to that for other items and he is very thorough and a great technician). He called me later in the afternoon and said that powered Redmere cable had fried the digital board and all the HDMI outs and ins (he said he had not seen that before, but had seen "powered HDMI cables fry one HDMI port"). He ordered and replaced the board and now I have purchased the C2G 42223 HDMI Voltage Inserter as per excellent suggestion from TLS Guy suggested and purchased a Ruipro cable.
How old is that Redmere cable? A few years ago, an update caused Redmere to not work and if yours is old enough, that may apply. I got calls from someone with a home that's almost three hours from here and they had sound, but no video. Great. First time, unplugging it helped, next time, it didn't. When I went to buy the replacement cable, I was told about the issue, so I didn't use an active cable and it has worked since because it's not terribly long. Then, the company that sells the bad one wouldn't cover it under their three year warranty, even though most warranties start when the part is sold to the end user, not when the dealer buys it from the distributor. Key Digital thinks it's the latter, so I will never buy their crap again especially after the tech support guy's idea that I could cut the ends off, terminate them with an RJ45 and use one of their HDMI extenders that sell for $300. Right. I should tell the customer that he'll have to pay another $300+ for something that "should" work when the first POS didn't.
Unfortunately, HDMI is like a mountainside that we're forced to run down, while wearing a blindfold. We know trouble will come, just not when or where.
