Can't you just send it to the SonyEricsson Repair Centre in Greece? I did that once in Holland, and they replaced my phone for free (ok, it was a completely diferent problem than that you have, but I have a good experience with it). Just send the phone without battery, with a note where you describe the problem and they will solve/repair it.
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UIQ Moderator --> herbert AT allaboutsymbian DOT com