I have sony ht-zf9 sound bar connected to sony kd-55xe8596 via hdmi 3 arc input. All been working fine but now have an issue of losing tv sound after both have been turned off and back on. I have tried everything from changing hdmi cable through to resetting both to factory settings. I can get it to work again after having both turned off and go through the initial set up but once I switch all off I have no tv sound again. I have a ps4 pro and Xbox series x plugged into the sound bar as well on hdmi 1 and hdmi 2 and both have sound and no issues. The problem only on tv input on soundbar. I've checked all settings and appear correct. Any advice or help will be great as it's driving me mad as not sure if it's a problem with tv arc or soundbar.