Originally Posted by Macondawg
Roku is not the only source and it occurs on all sources. The installer is in the loop, I just lost faith that he can resolve the issues. The HDMI cables were provided by the installer and the invoice says : HDMI 4K / AUDIO RETURN WITH CHIP HIGH PERFORMANCE. They charged me by the foot. The cables go up the wall and through the ceiling to the projector. I was charged for 35 feet, so I assume that is the true run length. No wall plates, extenders or adapters - the cable is run straight from AVR to projector.
I was hoping it was a setting somewhere that I could just change. Unfortunately, I can't see the AVR settings because there is no video. I even tried connecting the HDMI straight to the Roku to bypass the AVR but it did not change. I can try again tonight and use the Blu-Ray or cable box instead. Its weird because it worked perfectly for months, then nothing
Typically, cables that installers use are not the highest quality cables you could use and without knowing any other information than what is on the invoice, you can't even look up the cable to see what it is. "With Chip High Performance" indicates to me that the cable is active, which also means that the cable can only be installed in one direction. Being as the cable worked before in its present install location you will have to assume that it was installed in the correct orientation.
Is the cable installed in a conduit with a pull sting (it should have been for an in-wall installation)? Installing in a conduit is the ONLY way to future proof because that makes for replacing/upgrading your cable as needed safer and easier. It is also easier to control bend radius. A too sharp of a bend radius can affect data transmission over time due to the bending of the wires. Also, if the active cable was not from a reputable mfr, the chipsets used could have been sub-par which means that they could fail over time. Any active cable can fail so that's why you go with a known mfr and use conduit for those long runs or in-wall installations.
For runs over about 20'-25' the recommendation is to use a hybrid fiber cable for 4k HDR. They are expensive but due to their design characteristics they seem to perform much better than passive cables or active copper-only cables.
Another possible issue is the projector. We have seen quite a few reported issues with projectors, active cables, and 4k HDR. There isn't a definitive answer but some feel that the current output of some projectors seems to fluctuate enough that the power draw from the active cable isn't sufficient enough to keep the signal intact and consistent. That being said, some have had success using a power inserter to constantly provide the 5V/50mA current that the active cable requires.
So, was conduit used?
What kind of cable is installed, active or passive?
If active, is it copper-only or hybrid fiber?