JEEP LIBERTY AIR CONDITIONER FUSE

The A/c Clutch Fuse Was Blown, Replaced And That Fuse Blew As Soon As The A/c Switch Was Turned On. What Should I Do First

I Just Bought This Vehicle. Replaced A Locked Up A/c Compressor. But No Power Through A/c System. I Have Checked Fuses All Good. No Known...