Welcome to the board!
Give us a little more information to go with your problem: Why do you think it's the fuse holder?
Looks (from a schematic) that there are 4 fuses. Most likely they are in holders mounted on the power supply board, although the one in the main A.C. line may be by itself near where the line cord enters the case.
When the wise man points to the stars, the fool looks at the finger.