good companions the problem that I have is a tv daewoo model dth-2930ssfv chassis cn-405 / cm-405f which turns on and c looks normal but after a while it starts making squeals and the screen closes and opens and streaks come out horizontally and then c turns off and the stamby led that titilano ..... I have to disconnect it and the vulve to turn on ..... if anyone can help me I would appreciate it

The high voltage has exit somewhere, it can be in the kettle, in the output cable, in the body of the ply, to make sure, leave the room in penunbras and turn it on to see where the high voltage jumps. comment ..