The surface mount fuse F1 is a small, 1206 sized 2A fuse. Here is the digikey link:
http://www.digikey.com/product-detail/en/CC12H12A-TR/283-4492-2-ND/5042380
If you don’t have tools to replace surface mount components, you can instead get this fuse with through-hole solder pins:
http://www.digikey.com/product-detail/en/0876002.MXEP/F4985-ND/2059551
Note that if the fuse is blown, after replacing the fuse and before plugging in power you should make sure to check the resistance on two pins of the orange terminal block, and make sure the resistance is not too small (i.e. less than a few kilo-ohms). Because if the resistance is very small, some components (perhaps the TVS diode) may have been damaged, and if you plug in power the fuse might blow again.