I seriously doubt it. That's not the kind of symptom an incompatible power source would cause. If the scanner is able to turn on normally and everything, then I really can't imagine what fault the adapter could be at.
Source(s):
Personal experience

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Nope. Something like that it's more likely to be the USB cable or the scanner drivers than the power cord.
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Assuming the output from the power adapters are the same (or close enough) you shouldn't have a problem. If the scanner turns on and seems to function properly I'd say you're safe.

You say that the scanning software doesn't see the scanner, does that mean that the operating system (Windows XP, Mac OS X, etc) recognizes the scanner?

If the OS sees it and correctly identifies it, but the scanning software doesn't, it might be time to try some different software.
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This will cause a problem!!! I've seen many people attempt this sort of thing over the years with everything from external dial-up modems to routers, etc. The slightest difference in voltage can cause unexpected behavior. The fact that the plug fits is meaningless.
Source(s):
Personal experience.

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