That type fuse and fuse holders are notorious for making a bad contact.
I would replace the blown one after disconnecting the batteries, removing all the fuses and cleaning up the fuse holders and fuse contact ends with some wire wool or...
Hello all! Landrover newby here, so apologises for whats going to be a lot of newbie questions - I love this place by the way!
In celebration of reaching midlife!... I have just bought a 1972 Lightweight Series 3. It seems to be 24volt - 2 x...