KDL46W905A turns off and red light blinks 4 times

[Fortissimus]

Hi

My KDL46W905A turns on but switches off after a few seconds, and red light blinks four times.
A repair guy told me that Sony has stopped supporting the model, and the software is too old and not repairable.
Is it the truth? It's hard to believe, to be honest.
And I don't need any smart features on the TV, as I use it as a PC monitor.

Any advice?

Thanks

[Marino.Manolo]

2013 Model...

RED LED blinking count
4x
LED Driver Error
Panel Module