I have a Led tv, phillips brand, mod.40pfl4909 / F8, it had a serious short circuit on the source card, I changed the switched source card, made the logo presentation, shows in the function that this is that of TV, and it gives the message that there is no channel signal, but it is blocked there, because it no longer makes any function changes and does not obey the remote control,

Once the input voltage to the eprom memory of 3.3 was verified and that it was correct, check the components as resistors and capacitors that were in line with it towards the processor and that they were well, I proceeded to change the eprom memory since the logic was that because of the short circuit given on the source card, that it could have blocked the memory and that indeed that was, once changed, the television worked correctly both on the control panel and on the remote control