Purchased a Toshiba Smart TV in March 2019. Started to experience a problem about six weeks ago with a black flashing box which dominates the centre third of the screen. John Lewis sent a courier a week later to collect it for repair. The first time they spent twenty minutes diagnosing the problem and couldn't find it. It was repacked and returned to me. I duly mounted it back on the wall and switched on. Everything was OK for 4 hours and the flashing black box returned. I duly contacted them and got someone after an hour. Again the courier picked it up a week later and away it went for repair. Received it yesterday and mounted it back on the wall and after eight hours the black flashing box returned. I then emailed John Lewis. Who now don't want to know. As far as they're concerned the TV has nothing wrong with it. They reckon it must be where I live. I have three other TV's which are perfectly fine. So how they arrived at that conclusion god only knows. I have sent them screenshots and a video file to their repair company. I can't do any more. The whole thing has been an absolute fiasco. Very sad to see this in such a great company which has been renowned for fair treatment of customers. I personally, will never shop at John Lewis again. They have lost everything that was special about them. Their five year warranty is worthless. As a company they're all front and no substance. Shop elsewhere!