My guitar pickup is shorting out **HELP**?

i have a 97 ibanez iceman (ic300) and when i play on my bridge pickup sometimes itll short out and make no sound at all.but when i jiggle the pup selector it comes back on(untill it shorts out again) idk if its the selector or if theres a bad connection in the pickups or what...please help,i need to sell this soon and i cant when the pickups dont work