leonardoopaiva, check your fuse with a multimeter to rule it out. If it has been tripped and does not show continuity, than you have to find the reason for why it happened. Right now it sounds like you are just going to replace parts without checking to se if they are still functioning, which may or may not work for you. We can most certainly tell you what those parts are, but they may not resolve those issues. You need to give us the last four digits of your serial number so that we can properly identify your hardware.