A1000 - dies after loading kickstart???

[Steady]

I am trying to get an A1000 going again but coming up against something that has me stumped. Not being a hardware guru by any stretch of the imagination, I need a bit/lot of help to work it out.

I have created some new kickstart disks on my A1200 since the original Kickstart 1.1 disk is dead (yep, it had 1.1). I created two copies each of a Kickstart 1.3 disk as well as a Kickstart 1.2 disk to reduce the chance of disk errors being an issue.

I turn on the computer and it goes through the usual sequence before presenting the "Insert Kickstart" disk. I put the disk in and it reads in the expected number of tracks (22 or 23, can't remember how many). Then the computer goes into the expected reset sequence of dark gray/light gray/white before the display cuts out and the computer in effect dies (no disk clicks if the disk is ejected, etc). It does respond to Ctrl-Amiga-Amiga to reboot and uses the loaded kickstart image rather than the ROM because it does the same thing.

This happens regardless of kickstart version or disk used. This is totally weird and appears to be a short of some kind that is caused when a certain part of the hardware is accessed. Any ideas???

[Steady]

Thanks everyone for the replies. Actually, I'm in Melbourne so I won't be able to take up the testing offer unfortunately. Also, I know no-one with an A1000 here at this point.

Perhaps the A1200 I make the disks with has slight alignment problems, but I do know what a kickstart is meant to look like and when looking on the 1200 it seems fine. Also, the A1000 at least recognises it and loads the tracks. That, of course, doesn't mean that the content couldn't still be wrong.

I will try reseating the chips as suggested... other people seem to experience mysterious fixes after trying that.

Cheers all. I will post whether or not it works.

[Steady]

Well, I have some news. I think I isolated the problem with the weird A1000 boot behaviour. I was testing it on a multisync monitor (which is an acorn-branded M1438) which syncs down to 15khz no worries. I had it for years hooked up to an A4000 so I could use the AGA pass-through to have whatever mode I want. Anyway, about 10 years ago the AGA output stopped working on the A4000 and then about a year later it wouldn't boot.

Long story a bit shorter, I'd given up on the A1000 and moved to trying to fix the 4000, finding that it seemed to hang around the end of the boot sequence (booting from 3.0 WB floppy and not much other hardware). It seemed suspiciously the same behaviour as the A1000, so I tried the A1000 on the TV and it booted and works fine!!!! Even the A4000 finishes booting through the TV although it seems the RGB output is fried (looks like I'll need another thread for that one).

So, it seems that the RGB-VGA cable I was using is defective! One step at a time, these Amigas are being revived :-D

[Steady]

Thanks for the extra info Mingle. Glad it helped you out too. It is a strange one though.