I just bought an epiphone ea-250 hollowbody off my friend and the jack is very "scratchy", as in if you move or bump the cable it will crackle and/or buzz(the cables fine it's a month old monster rock cable that i use with 2 other guitars)

the problem is that it doesnt open from the back or even have a jack plate, so im hoping it just pulls out farther, but before i try something stupid how do you clean the jack?and any other suggestions on what to do would be nice