Rear winscreen wipers?

I have a hyundi amica. the rear windscreen wipers do not wipe or wash! i have changed the fuse and cleared the water jet. any diy advice?
Answer
Check with another fuse first as new fuses have been known to be bust,,, then check wiring and see if you can hear the wiper motor trying to work,,, then if still not you mar need a new wiper motor (from scrapyard first as its cheaper). nice luck.