Surface Pro 3 won't charge! 1000€ brick on the table

[davo_svk]

Hello I have a Surface Pro 3, but the warranty has expired. Anyway I can't charge my Surface. When I connect charger into Surface, the LED starts blinking and after few seconds it stops flashing completely.
So I borrowed another charger from my friend (Who also has the Surface Pro 3) But It's not working on my surface pro 3 too.. So I think there is not problem in the charger, but the problem will be in the surface, I think. Now I have a 1000€ brick on my desk. What I have to do now ? Thank You so much for any help!

 

[davo_svk]

I was talking with support and We made service exchange even when the device is out of warranty