When I raise blade on my 2009 700 it works great but when I lower it and as the weight of the blade hits the ground my quad just about dies because the wench is drawing so much power. What in the hell could b the problem!?!?!?
The cable is probably bound up on the drum.
Have you ever pulled the cable completely out and reeled it back in? This is something that should be done on a routine basis if you use your winch regularly, especially when plowing.
If you have only used the winch for plowing, then you may get away with only pulling the cable out about 10' or so.