Sound problem

[Crescent1]

I have a Sony android tv kd49xh8096bu and Sony sound bar ht-zf9. Added to this I have a sky q box.

the problem I have is the sound seems to switch from stereo to mono, not all the time but enough to make it irritating. 
I can also describe it as the sound coming from the sound bar to then coming from the tv speakers.

also the info bar keeps dropping whilst this goes on, I fixed that by stopping the info bar in settings.

the tv is 5yr old but still within warranty (John Lewis) the sound bar is less than a year

any help would 

[Joe_Dohn]

Could you possibly let us know what they report to you? It'd be really helpful.

[Crescent1]

will do. Thanks for your help

[Joe_Dohn]

@Crescent1 Any updates on this my friend?

[Crescent1]

Not really. The repair shop had the tv for a week and could find no problem. They hooked it up to their surround system which was different to mine. 
they blamed my SkyQ for causing the trouble saying they have had numerous faults caused by the box.

not too sure where to go from here

[Win_88]

When you get the TV back, try removing the Sky box and see if the issue happens without it. If it doesn't, there could be merit to you were told.