Screen turns off, red light blinks in periodes of 12 times: Txp42st50e

Screen turns off, red light blinks in periodes of 12 times: Txp42st50e

While playing on PSP4 the tv made some noise (left side) so we put it off. Now, when turning on the Smart viera screen appears and then with a kind of flitsnoise it turns off with the red light blinking in periode of 12 times. Turning every power off a day did not help.

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