Thank you for the replies!
I went to a local electronics shop, and they said the AC adapter is indeed quite dead (because I plugged it into the wall without a voltage converter.) They said they are able to get me a replacement, but it ain't cheap. I can't use eBay or anyone online because I don't have a credit card for the time being.
Another question, if I may. So I killed the ac adapter, does anyone here think the scanner will still work properly? I don't want to order a new ac adapter if the scanner is dead as a doornail.