My Husqvarna 321EL is dead. I've changed the fuse in the cable plug, but when switched on no noise or anything comes from the chainsaw. It was working fine last time it was used so I cannot understand why it stoppped working whilst sitting in the box. The only thing I can thing of is that the chainsaw oil has travelled inside the unit and gummed up the eletronics. Any other causes?

Chainsaw has only been used once.