Amiga 3000 restoration

[matt3k]

Nice find and good luck with the restoration.

Grey screens can be a few different items.  Make sure everything is seated well and swap the CIA's.  That is the quickest fix for that screen.

Sad that most 3000D's have taken battery damage and need TLC.

[matt3k]

I am always looking for the best advice to neutralize acid.

I can tell you from painful experience that baking soda is a terrible method of removing acid.  I used this trick many years ago and all the 3k systems in that batch failed eventually.

The sandwich layer of traces is tricky to do treat properly.  I try to stay away from systems that took battery damage, because most of the times they come back to haunt you even if they seemed to be treated properly for the damage...

[matt3k]

Although I doubt it is a SCSI controller or drive issue (taking bets that is is a damaged trace/track or chip lead), it would not hurt to unplug everything except the daughterboard to do your testing.

Dan is right on this one.

Have had many 3000's fail with black screens.  It will be a chore but it is going to be trace or chip related for sure.

You can try pressing the caps lock multiple times and if the light freezes after 5 times the cpu isn't responding.

[matt3k]

Won't fix the problem.

Yellow screens like when the daughter board is out indicates bad CPU and that can be bypassed with a CPU card.  

You could always try it but isn't getting far enough to even see the CPU.