Congrats on getting it this far! Like that first pic showed, that analog board caps do need replacing. The sooner the better.

Since this is a classic, have you tried booting up with the ROM Drive? It's supposed to come up in System 6.08 when you hold down the Command-Option-X-O keys on start up.

Its the only Mac I know that can do this and it is great for Hard & Floppy Drive Diagnostics and systems testing. You can also make an emergency Floppy Boot Disk on it by formatting a floppy disk and dragging and copying the System Folder from the ROM Disk to the Floppy Dsk.

EDIT - Sorry, that's not your pic but someone else's. Still the sooner you get it done, the better.