The picture on my TV suffers from being overlaid by what I can only describe as 'cloud shapes'. It ruins my ability to watch programmes. It has occurred 3 times in the last 3 months. I tried switching off and then unplugging all attached devices including the tv and restarting. This to no avail. Twice I found that leaving the TV (only) switched off overnight the problem goes away. On the second occasion I needed to speak to support who had me reset to factory settings to get the picture back.
On the latest occurrence I was asked to video it next time it happens, £3000 for a now 18 month old TV, to await the problem happening again.
