the all hdmi port do you use it ??It's an older KD-65XF9005.
Make sure you connect to the HDMI ARC port. There is only one. The TV sound settings are also important.
my connection...
HDMI 1 -->> SAT DECODER
HDMI 2 -->> ANDROID BOX WITH SUBSCRIPTION
HDMI 3 EARC -->> Wiim Amp Ultra
HDMI 4 -->> Mini PC
if only 1 HDMI 3 EARC connected with Wiim Amp Ultra, the problem is GONE AWAY...