Hello I need help, the mainboard has a short circuit, when I disconnect the power supply of Maiinboard, the backlight goes on, when I close the cable s.Mainboard, is no longer
where are the problems?
many thanks

I have this TV, which does not turn on, the standbay does not synonymous red

Sorry, it was no clear.

About your first topic verify if this tv have any protection .

Any error in backlight , as over corrent, can do it and turn on this protection.

How do I know if my TV has protection, how do you know that?
Thank you

You need to check the schematic and review it.

i think in motherboard there is a short circuit, i read in another page that the tunner could be it