Hi Alejandro, welcome :) nobody answers you ... I leave you the service manual https://www.electronica-pt.com/esquema/tv/lg-esquemas-tv/lg-32ld460-chassis-ll01b-38100/ I also leave you a tip to determine if it is the source or the main that does not work When you connect the TV the source delivers a standby voltage to power the main, when you give the power the main returns the power on level to the source and it delivers the main tensions Three cases 1 - That the source delivers the standby and the main does not return the power on - main malo 2 - That the source does not deliver tension - bad source or short main 3 - That the main return the power on and the source does not deliver the tensions - bad source What is your case? read If you answer I give you my Like of Luck for what solutions but I hope yours;) I greet you, Tobias If you ask a question in the forum, always answer it, the colleagues who answer you spend your time and knowledge with the will to help you, if you are grateful, choose the best answer and give a Like to those who participated. Thank you for collaborating in the forum and Success with your repair