Dave, my scanner keeps putting streaks through the image. I have cleaned it but it must be something with the scanner head. I'm going to get a new scanner today and will scan the card for you.
As a hardcore archivist, I've run through a number of scanners. Regarding the streaking: There are two possible issues -
One is that the optical elements are starting to go, and in that case, your best bet IS to replace the scanner.
The second possibility is that there are particulates stuck in front of the optic bar, like dust, hair, food... etc.
I recently had problems of consistent streaking and as a last-ditch attempt to fix it, did something I've never done before - I disassembled my scanner. Sure enough, there was physical debris. Cleaned it out, and re-assembled but within a few minutes, I noticed another streak. After a second round of disassembling, cleaning, and reassembling, all was good. It's been a couple of months with no issues.
Of course, taking apart a scanner is not something you're meant to do, and I suspect not all scanners can be easily taken apart. That said, if you're considering tossing one in the trash, and you're so inclined, it can be a worthwhile attempt before trashing it.
