I get this TV that turns on it with a gray screen, it is visually checked not finding anything strange all the voltages are fine, this fault has reached me and the solution is solved either x lack of the vertical voltj negative or with the replacement of it but in this case it was not like that, the filters referring to the vertical were changed the same vertical changed twice for a normal working one and diodes of -15 and +15 also the video filter 180v, the screen was changed and nothing else the yoke and nothing the voltj q teng are the following vertical q is D78040 is L78040 and the stv8172a pin 1 = 0.02v, 2 = 16v, 3 = -12v, 4 = -16v, 5 = 0.12, 6 = 16v, 7 = 0.01v chota voltaj I have the + b in 110v, 13v, 12, 27v there are also 180v of video you will be under the writing so that the screen will not damage each katodo with the sceen under the teng in 38v each if I upload it it looks the same gray and the pulse of the katodos of the micro are of 4.7v each one, ah another thing that I notice strange is that when I am going to remove the pacifier that I put the screwdriver and at the same time to the mesh of the screen to download it does not pull no spark after finishing off I put the destr and nothing download, I leave a picture.