Hi. I recently got my old A1000 back from my friend. This machine was given to me nearly 20 years ago. I have honestly only turned it on once, when i was given it, and i vaguely recal there being an issue of some kind. it pretty much got used as a monitor stand for about 6 years before ending up in the loft until i gave it away about 3 years ago. My friend did nothing with it either and returned it.

It's time to get the old girl working so i pulled it apart and tested the PSU first. Under 1amp load on the 5v rail, all voltages look good and stable and i got a good stable tick. connecting the board brings up the the Kickstart logo, albeit in magenta. something had gone out of spec, but is back now, and it's starting up in the correct colours and the drive is ticking fine. However, when it loads kickstart and resets, it sticks on a white screen. swapping the CIAs, didnt work, it wouldnt startup at all.

I fitted a PiStorm with a plain install, just mapping KS1.3, and again, with the CIA's in the original position, i just get a white screen. Swapping the CIA's iget further, to the 1.3 boot screen, however the floppy doesnt work.

I got it to boot Caffeine but it reports the drive as bad and the mouse doesnt work (well, at least the right button does. I dont have a keyboard to test.

I figure i have at least one faulty CIA. can I replace these with A500 CIA's or are there limitations on the versions it will take?

Did unpack in Amiga , no change
I’m pretty sure I have the correct compatible files but it looks hopeless for this little endeavor.

The rescued Amiga 4000 was cleaned, now we had to evaluate just how bad the battery damage was.
Amiga 4000's nearly always feature battery damage and its located RIGHT next to the main system memory.
Would this Amiga live again, or would be be doomed to be a "for parts" machine....

Amiga 4000 CH04: Damage Inspection

Before I got jump the gun and make a bad situation worse.

I thought it best to ask what is currently the best tool to repair a 3.9 1gb partition formatted in FFS that is reporting a checksum error.

I was installing toolsdaemon and it crashed the system, on reboot it reported the checksum. I've read that ami-tools might be an option. I used to use Quarterback, would that still work?

The issues you will have is that from what I recall. Cybergraphx is no longer supported from what I can see.
Icomp bought the P96 rights a few years ago and Thomas Richter (THor) maintains this as long as you buy a license.
I have successfully used P96 V3 upto the current V3.4.1 with both Bvision and CVision RTG cards.

I think I did try CGX up to RC6 from Aminet with the CVision.