Good afternoon, could you give me a hand to repair a 21 'matsui TV with drama in the vertical zone ... When turning on a white line appears in the middle, from the middle down all black, from the middle up the image comes out half with rain and flickering, when turning on 2 seconds later it turns off again, but after 4 attempts it stays on but with the drama that I comment above. the brand and model would be matsui of 21 'model MT-TV2134