UPDATE
Later yesterday tried a 4 th HDMI cable
ALL TV functions working again.
Went to System LIBRARIES
All 9 items had Load Times Dates 2018-03-04
NAME VERSION BUILD DATE Load Time ID
YZSDK 225701 Jul 27 2017 2018-03-04 509
LUA 225701 Jul 27 2017 2018-03-04 ` 511
PROGINFO 225701 Jul 27 2017 2018-03-04 525
VOD_RTSP 225720 Feb 21 2018 2018-03-04 528
SRCP 225704 Aug 15 2017 2018-03-04 519
TGTCAMP 225701 Jul 27 2017 2018-03-04 522
BANNER_ADS 225701 Jul 27 2017 2018-03-04 523
SEARCH 225718 Jan 18 2018 2018-03-04 529
MYFIOS 225701 Jul 27 2017 2018-03-04 524