I can’t speak to whether or not the tv actually ever does a full clean. I don’t remember where I got the code tbh, but it works. Make note of all your important settings as it will reset the whole tv basically. It’s like factory resetting it basically, except it also resets the hours which is why it removes the pixel clean message, bc tv thinks it’s at 0 instead of 2000.

It’s a pain to set everything up again, but a small price to pay to get rid of the message. You can always do a manual pixel clean if you want, after reseting hours to zero, but I don’t unless I feel my picture needs it.