Thanks for the reply, Mike!
I do have Band-Aids handy. :-)
As for why I'm trying to get to the CIAs, I have collected an A1000, A2500 and an A3000. All of which malfunction in some manner, a couple of which may be due to CIA issues. I was hoping that a little chip swapping between the three might help me diagnose the issues and perhaps get at least one up and running:
- The A1000 gives a dark gray screen at power on. Doesn't get to Kickstart. Reading online suggests this could be a CIA issue. I did try swapping the positions of the CIAs in this box with no change.
- The A3000 generally works, however it will lock up fairly often when trying to access the disk-- either floppy of hard drive. Readings suggest this is a CIA issue.
- The A2500 hasn't been well cared for. Can't immediately recall if it makes it to Kickstart, but it throws Guru Meditations. Don't recall the order, but I did make note of these: #00000008.00202FDEm #00000004.00000000, #00000004.00202FDE, #0000000B.00001970.
Think I'm on the right track with the CIA swapping?
I lusted for an Amiga as a kid in the 80s and never could get one. Better late than never, eh? Now I just have to get 'em running!
Thanks!
on all of them, check and reseat all chips. Check power supply on the A1000 for proper voltages.
on the 3000 its likely a software issue, also could be a scsi termination issue. Even battery leakage that doesnt "look bad" can be bad. alkaline from the battery can seep into the inner layers thru solder joints and cause damage. I suggest removing the battery now! nuetralize the area with a acid(lemon juice,etc, clean it off with iso alcohol and dry it well.
The A2000 is hard to guess, reseat chips,check for battery corrosion near the roms and 68000,its a common problem. replace sockets that have corrosion in them if you want a stable machine. once the plating is gone on pins its not likely it will run stable over time. pull all cards/hard drive and see if it will boot to a good workbench disk.
i doubt any of the problems above had anything to do with cia's ...
