Cordial greeting, friend if it does not give life signals at all and the normal fuse is ok, check to see if the transformer is giving its voltages as a first step, if it does not check if the transformer has thermal fuse, which is located in the internal part of the transformer in the primary coil of the 110VAC -220VAC is easy to notice since it is embedded in the first part of the primary coil, you can see since most of the time has white or other color ailntes , otherwise you have to check the secondary part of the source, remember to comment your resusltados to continue in your help greetings