Hello friends of the forum good morning, I need your help, I have in my workshop a Sony TV model kv-21me43 normal turn on you hear the voice works all right, but black screen comes out and when you upload the screem you do not see anything, I have measured the voltage and it's at 27v, I don't know what to make more friends, I already changed the flyback and it's still the same, help x please in this case thanks