Stu1:I have had nothing but problems with Panasonic , it struggles to work out what the format is and keeps flicking between different UHD formats e.g Dolby vision and other UHD formats. It is particularly bad with Apple 4K TV’s new and old version . It also does this with the Xbox series x as well . I have also had issues with the TV connecting to a Bose soundbar the sound drops offline , it only works correctly with an optic lead. I have just had it replaced with new tv same model through Panasonic and 3 days in still have the same issues . My Samsung however just works with exactly same set up. I would never buy another Panasonic tv
I see in another forum you bought a JX700. Reviews are really bad on the 600 and 700. If you can't get a refund maybe try asking for a credit. You can probably get an 800 or 900 for what you paid now.