Sound Fault newish Sony Tv

[slivo59]

i have Linux lite v3.4
used it on a Sony TV model KDL-42W705B made Feb 2015
using the hdmi port to connect sound and vision no problems
i tried using it on new Sony TV model KD-55XF7073 made September 2018
using the hdmi port to connect vision perfect, sound garbled sqeeky
used hdmi sound options

Thinking that the latest v5 would cure the faulty sound waited till it came

Have now installed duel boot Linux lite v5 using the Sony TV model KDL-42W705B
again used the hdmi port to connect sound and vision no problems
so tried using it on Sony TV model KD-55XF7073
using the hdmi port to connect vision perfect, sound again garbled sqeeky
used hdmi sound options

trashes the sound Linux lite v3.4 and v 5 sends out.

My thoughts are that Sony have altered the on board sound somehow between
tv models or maybe my new Sony TV model KD-55XF7073 is a runt and other models have no problems

By the way i also use Raspberry Pi 3 model B on
this Sony TV model KD-55XF7073
used the HDMI port to connect sound and vision no problems

to get by have ordered from Ebay a
HDMI to 3 RCA CVBS Full HD Video 1080P AV Scart Composite Converter Adapter
hopefully this should circumvent the incompatibility problem till a suitable fix comes