Image for Series 2 TCD240040

Hello. Newbie here. I am looking for an image file for my Series 2 TCD240040 unit. The thing will not get past the gray ..."powering up" screen and from what I've read - that's typically a HDD issue. Just wondering how I'd receive a clean image file? Also, can a larger drive be installed? The unit is a lifetime machine and I'm trying to revive it for my wife's viewing pleasure while she is exercising, etc. Any ideas would be cool. Thanks all! :D