If you can not get the power nozzle to work then the best thing to do is take the nozzle to the local vacuum store(used) and they will tell you the best advice weather it be fix the old one or replace the head. You can pick up a brand new head for around 99.00 up to 350.00 depending on what you want and they have come a long way in the past few years so take a look at a couple new ones.