I have the TCL 40S6800FS (Australian model)
It's a great unit, only issue is Disney+ only has the background sound when playing and no vocals/voices. I read it has to do with 5.1 sound and the TV is stereo or something.
Is there a fix to this or a update to the firmware? TCL have very little support online. Thanks
You mean "TCL have very little support".
I'd suggest you try running the Disney+ app on your phone and cast it to the TV.