I had the same scanner before I bought this 4400c.. the scanning-light was burned and only gave me a black page.. look if it starts giving light or flickers or just moving around..
anyways, this 4400c is just damned better, great one.. 30 sec and you have a full colored scanned picture in your computer..
I haven't tossed it, cause I like things's parts
anyway, check what the problem realy is before you do something with it..
oh, and my new scanner gave me a black page yesterday too.. I had a viruse named Pe Peraite, or something like that, that damaged all of my exe files... I deleted any stuff linked to it, and reinstalled the program and drivers (new ones from the hp.com site), and now it works perfectly fine..