Amiga 3000 Trouble

[Prime]

I recently got an A3000 and immediately un-soldered the battery. Surprisingly the battery barely did any damage at all if any. After removing the battery I tried it and it worked fine. Last night I bought a 3.6v phone battery and soldered it to the motherboard. Red to + and of course black to -. Tried to turn on the Amiga and it doesn't even get to the dark gray, med gray, white start up test. As a matter of fact the floppy never even fires up. The hard drive does but not the floppy. When you look at a 1084s monitor when it is on but not connected to anything, the monitor shows some kind of shimmer. When I turn on the the Amiga it stops shimmering but remains in the same exact color.
Any ideas?

Prime
 

[Prime]

I was always under the impression the A3000 needed the daughter card installed to work. If not, that would be awesome! It is a pain to leave it in all the time for testing.

Joe

[Prime]

Thank you Castellen,

This is a really helpful article. I will check all these possible issues. It just seems weird, that it all of the sudden stopped working, after working fine. I will keep you posted, thanks.