I pretty much have determined that mine is the scanner itself. I hooked up the scanner to my Ubuntu laptop and went through various steps to set it up and even put new firmware on the scanner, but no go. It just doesn't work anymore.
Frankly, this puts the nail in the already mostly sealed coffin of Espon products for me. Their printers have always be excruciatingly awful (print heads in the ink jets that easily clog but are not user replaceable - BRILLIANT!) and now I have found that their scanners are junk to.
HP, you just snagged me for yet another piece of equipment.
*****, too, since this Epson had the nice transparency lid. But if it doesn't work it doesn't work and there's no getting around it being a hardware failure.
Frankly, I do not understand how Epson has stayed in business with the shoddy junk they sale.