Have you tried resetting the TV? Go to Home > Settings > Support > Self Diagnosis > Reset. When going through the set up of the TV again, you'll then be asked to select the correct region.
Let us know how you get on.
The clicking noise is becoming louder and starting to get really annoying. It's the same noise the nu800 was known to do.
It's getting to the point that I'm regretting buying the tv.
Only a ps4, but the tv does it whether tge ps4 is turned on or off. And also continues to click for a short time when it's turned off. Almost like it's discharging static. It's seriously frustrating!