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
 

[T3000]

Are you testing it barebones? Daughter card inserted?

edit: sphielng

[Castellen]

I've written some information on A3000 boot problems here, might give you some clues.

[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.

[Tron2k2]

Don't run it without the daughter card.  It needs to be there!

Although once I did accidentally boot a 3000 with a Cyberstorm card, without the buster chip installed.  It got all the way to early boot screen before I realized my error and shut it off!  It wasn't even acting funny, I just looked down and realized what I'd done and shut it off.  No harm done, thankfully, but don't try that at home :-)

[JimS]

I used to know a guy who stored his 3000 for 6 months at a time while living at his winter place in Florida. A couple time when he came back, the system would die as soon as he turned it on. He finally found out that the diode charging the RTC battery was blown. We figured the battery went completely flat in storage, and the recharge current was too much and blew the diode. You might look at that area... I don't have my 3000 schematics handy to point you to the right diode.