On the loom their will be three dofferant types of fuses 2x 30a(main fuse), 1x 5/7.5a fuse it could be any of them. Follow the two beighe colored cables coming from the passanger door there are youe electric window cables, untill you come to either the back of the fuse box if factory fitted or to an inline fuse if fitted from none standard like mine. I made a how to install guide on fitting them here it is:
http://www.saxperience.com/forum/sho...d.php?t=322591
Read up on it and it will give you a netter idea of how it works and what to look for. The fuse attatched to the two beige cable will be either 5 or 7.5a so once found remove if its singed inside its blew so replace with same amp fuse. Or it could be the main 30a fuse which again should be located on the fuse box near the passanger feet as power might have urged it to pretect the componants. If all three fuses are fine then remove your door cards and look at the two beige cable attatched to the unit the insullation might have worn away or got caught by the bottom of the window and snapped it cas if the copper from inside the cable touches metal it shorts the unit. But the buzzing sound from the passangers side indercated either the fuse has gone or the relay has gone which both parts can be replaced as cheap as £3 from Maplins.