Doubt about the Yamaha warranty for Modx8.

I bought it three months ago and it has a problem on the motherboard. In the store where I bought it they say they can not do anything. On the support of Yamaha Spain, after a month, they told me to take it to the technical service. And the technical service says that the motherboard has to be changed. But in Spain they do not have the motherboard, neither in Germany (the support site for Europe) and they have to bring it from Japan. This will take 25 days, plus whatever it takes to repair it.

Yamaha does not replace the product in these cases?

Thanks