Only backlight is working, neither image nor audio, 55PUS6162/12

Only backlight is working, neither image nor audio, 55PUS6162/12

Overnight our Philips TV (55PUS6162/12) started behaving badly.

ANSWERS:

Hello malacath, I have an 65pus6162/12 with the same problem. do u know if the archive that philips send you is valid for me or only for 55”??