Coincident 34SE MK II AMP--- replacing the fuse


Just became the second owner of this amp. I'm having difficulty gaining access to the inside of the unit. There is an orange tab underneath the amp that is supposed to be slid forward with a small screwdriver. I've done that but the tab still remains in the way. How do you move it get inside ? Why is something so simple a mystery ?

Thanks for anybody's help out there. 

128x128audioduane