My new KEF V700 soundbar needs audio either via HDMI ARC or Toslink. My old(-ish) Sony KDL 46W4000 doesn't have ARC and Toslink only seems to work when outputting 2.0 audio. All (cable TV) channels that carry 2.1 audio result in a 100% silent soundbar.
1) Why doesn't my TV output the "2" from...