KD55AF9 fault

[Westernlife]

I bought my TV in January 2019 and it's been fault-free up to now. However it's started cycling on and off every 30 seconds or so and displays this blue stripe pattern on the screen. The remote control has no effect so I can't access any menus. I tried a forced factory reset using the manual buttons on the side of the TV but that didn't work either. Is there anything else I can do before I call in a repair man?

[rooobb]

I don't think so, you should rely on a technicians..

[Westernlife]

I'm pleased to say the technician fitted a new main printed circuit board and all appears to be well. Apparently Sony had sent out a bulletin about a fault of constant rebooting.