Thats bad news indeed. I dare say that many repairers will find this machine too old to source parts for. That said, Coffeeparts sell replacement elements, seals, thermostats etc., for this machine. If you find a repairer, they may find the problem for you. If you can source the parts, then theyll probably be able to repair it for you.
The most common cause of earth leakage is a broken element. The elements are replaceable in this machine and Coffeeparts has them for about $80.
Im sure this Faema will live again. These machines are too good to throw away.