Hi ND
before you replace the fuse, chances it has some other issues which you need to check, e.g. shorted ic, etc.
replacing it may not help as the fuse can blow again..
what happened actually? any surge or etc ? any abnormalities ?
it seems the secondary side capacitor looks bloated too.
do you have some knowledge on this repair?
take caution on the big capacitor, as there could be some charges, which can give you a nasty shock if precaution is not observed.
do you have a multimeter?