Just reading about the fuse problem on this page.
It might or might not be the fuse,. who knows!
Usually when I turn on my A.C. unit (usually from the thermostat), I would hear (1) click, and then from the outside A.C. unit would turn on, finally the compressor (I think )! Would go on.
So a total of (3) stages to turn on the A.C. But lately I hear the outside A.C. would only turn on once since the last one would turn on just about 2 seconds, then would shut down. It's like it's trying to turn on but could'nt,. don't know what to do.

Not knowing what fuse you are talking about, I can pretty much tell you if the fuse to furnace is bad nothing works. You need to get up close and personal 1st with the furnace does the blower come on when the tstat is set for cool /heat/fan only. If so go out to the ac/condenser unit is it working? The fan and the compressor whis is inside the condenser unit and starts up at the same time as the outside condenser fan,,
Do all this and let us know what you have found out