Need Help - Sonus Faber Gravis Torroid Specs

Hi guys,

My friend's sonus faner gravis had a problem of the fuse always blowing and the technician who take a look said it was the power transformer problem.

Maybe someone could help to give the specs of the power supply torroids for the very first sonus faber gravis. The sonus faber distributor in our country said that Sonus is not already supporting this model (which is weired for a well respected brand).

Your help is highly appreciated.