The Power button does not appear to be damaged. I've tried plugging the printer in in another room (by itself, no computer) and still nothing. I've also left it unplugged overnight and even tried using a different power cord. It just will not power on. Note, the printer was working just fine yesterday afternoon. The only thing I did was turn it off in mid-operation.
Even if the power button were damaged (and I see no sign that it is), it should turn on by itself when I go to print. Instead, I get an error message simply saying "the printer is not ready." (at first, I was getting a message that "the printer is offline", but I was able to toggle that by going into the Printer Properties in Windows and changing its online status.)
The printer is only slightly over a year old, so it's no longer under warranty (naturally). Newer models are junk, so even though Canon has a "trade-in" program, I'd rather fix this one (which SHOULD be something simple).
I bought the "Canadian" version of this discontinued printer specifically for it's CD printing capabilities. Newer models... and ALL U.S. printers... disable this feature (by law?) According to Canon (after I asked), there is no fuse inside the unit that might have blown.