A slipping belt will cause the compressor to kick out.

However, with a blown fuse and a dead MAS, I'd look for some shorted wiring.

Mice love to chew the insulation off of wires, so look for mouse damage in particular.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!