Originally Posted by da1817
Hi everyone - Im in a bit of a pickle and need some advice. I had my contractor install a 33’ 8K, BIFALE HDMI 2.1 Fiber Optic Cable. I should have tested the cable bf the walls were up. Which is stupid of me i know. But now that it’s in when I connect to the projector, there is no picture, screen just goes dark, then blue, then dark again in a cycle. What I cant figure out is whether the issue that my projector is too old - Sony VS70. Or that the cable was damaged, or something else entirely. I got this cable for future proofing and it would stink if it was a waste of money and I’ll now need to spend extra to run a new cable. Thoughts?
First of all, there is no such thing as an "HDMI 2.1" cable. If the cable was certified for the HDMI 2.1 option sets, which there is no indication on the Amazon site that it is, it should be labeled as Ultra High Speed HDMI. That makes the cable questionable. BIFALE does not have a good reputation.
The cable is an active cable so it can only be installed one-way. There should be markings on the connector ends that indicate Source and Sink (TV).
The ONLY way to future proof is to install your cable in a conduit so you can easily upgrade or swap out your cable as your needs change. Video technology will always outpace connection technology, and there is just no way of knowing that once we all upgrade to shiny new HDMI 2.1 devices that support all of the option sets that the cables installed today will work adequately then. Hence conduit (unless you have easy access to your cabling).
HDMI is still standardized around HDMI 2.0 (18Gbps). So even if you had a cable that was actually certified for 48Gbps, the HDMI chipset at either end are HDMI 2.0 (18Gbps). The cable is just the data pipe. It's the HDMI chipsets at the source and sink end that determine what you can get and utilize, and both chipsets should be on the same version or build of HDMI 2.1 for full compatibility.
The most reliable connection is a single cable, source to sink, with no wall plates, adapters, extenders, etc in-between. This is especially true for active cables, whether you are pushing HD (1080) or 4k HDR.
There are quite a few reported issues with projectors and active cables at distances longer than about 25'. It's possibly related to current output at the HDMI port. If that's the case, then a voltage inserter may alleviate the problem.
At distances longer than 25' the recommendation is a hybrid fiber cable such as the Ruipro4k (HDMI 2.0 option sets). They do have a newly modified 8k cable coming out in a few months as well.
Did you install your cable in a conduit?
Can you see any markings on the connector ends that indicate directionality?
Is this a single, source to sink connection?
Are your source settings correct for what the projector can handle?