Had this 2021 55 inch frame TV for a week and having used it for a few days it refused to turn on and instead the screen flashed white in the right hand corner and there was a sparking noise. After this I unplugged it and then re plugged it and it did come on but half the screen is a yellow colour as per the attached pictures. I ran the picture tests and it failed all 3 as per the picture. I guess this is broken and I will return it to the retailer but any ideas on what the issue is would be very useful. Thanks David.