Kwa here
Hi... I have the intermittent black out
issue with my new LG-C3 TV and my Apple
TV component, and have solved it.
I have tracked it to the cables. I
bought
4K and 8K cables of various lengths and
tested them all. Some of them work,
some don’t even though rated highly. It
is a roll of the dice. In order to test them, I hooked up
the highest rating cable I can get (8K)
in a mid-price range (Even the expensive
cables are not consistent) directly to
the TV HDMI port, which defaults to
Dolby Vision. I advise to get the
shortest possible cable you can start with (I
started at 24 inches). I then swapped
out cables from different manufacturers
with different lengths all rated at 8K.
What surprised me is how some cables
simply don’t work, others allow the
Apple TV component to be detected by the LG
TV, but with a "No Signal"
message. Others yet have a constant black
flickering image right away, and even
others do not exhibit a problem right
away, but may after 15 minutes
I want to hook my Apple TV, about 10 ft
away from my LG C3, so I bought 8K HDMI
wall plate Key connectors, since I was
going through a wall interface
(you can
find 8K connectors on Amazon) . With
over a dozen cables tested, I can now pick
the best ones and hook up the
components, even with the Keystone wall
connectors. (I test the daisy chain
first before installation because one cable which may have been fine on its own
, can still compromise the signal in a daisy chain)
This issue drove me up the wall for
weeks,
as I started with a different, but
related problem. I bought a new Dannon high end receiver
and the LG TV could not 'see' it with
eARC.
It all came down to cables. Once I found
the right set of cables that
work, everything is fantastic. It seems
that cables are not consistent even identical
ones from the same manufacturer.