I added a "PETdisk" to my 8032 a few months back. It's a small board that draws power from the cassette port, plugs into the floppy port and emulates a giant floppy drive on a SD Card. It is FAT formatted so the PRG files can be downloaded by your PC, copied to the SD Card and then reinserted into the board. It can be configured as Unit 8-11 and has a passthrough for using real drives.
If you get your 4000 series up and running then look at getting one. It comes pre-loaded with a ton of software. The guy who makes it also produces a diagnostic ROM and a BASIC upgrade ROM.
Any idea what is wrong with it? Do you get the "beep" on power-up or is it completely dead?