Advice for trouble-shooting & booting a A4000T - Success!

[efrenmgp]

Hello amigasociety,

Try with everything disconnected except modules (video/audio & disk) and the 060 card. Remove the 060 card to verify the jumpers below it, I think they should be on the EXT position, if not you can try on the INT position but I'm almost sure it should be EXT.

Do not worry about RAM on the motherboard. The machine has chip ram soldered to the motherboard so no problem there.

Verify the KS chips to see if they are well seated (I got one as non-working and it had one pin outside of the socket). Also, the chips should be version 40.70, I think that's printed on the top.

The machine will take a little while since it has no HDs or Floppy, but if everything is OK, it should come up to the "Insert WB Disk" animation.

Good idea also to check for voltages but do as the previous advice and measure it from one of the molex connectors, or to be completely sure about voltages reaching the motherboard, disconnect the power from the motherboartd itself and measure from that connector.

Good luck with your A400T!
efrenmgp

[efrenmgp]

Am I correct this is the Kickstart Screen asking for Workbench or is this a screen asking for and not finding Kickstart?

...

I put in the floppy drive both the stock A4000T Install and also Workbench 3.1 floppys, the drive whirs a moment, goes back to this same screen with a floppy going into flopy drive.

That is the kickstart screen asking for a WB disk, so good news! the machine boots!! :banana:

Now for the second issue, the floppy disks not booting, it can be that either the disks are damaged (or not bootable) or the floppy drive is damaged.

Do you have another computer to test those disks on it and if they work, exchange the floopy drives and test again on the A4KT?

Regards,
efrenmgp

[efrenmgp]

The running Amigas I have is a newer SAM 440ep based system (no floppy drive) and an CD32 (no floppy drive) and a Amiga 1000 with two floppies, internal and external.

But, I am guessing the stock 4000T floppies I have will not read in an ancient A1000, will they?

I do have that 2nd Amiga (untested) I picked up, a A4000D based HUMONGUS case beast that has a drive in it but no idea yet if she boots or runs.

But, other than hearing the drive whir and seeing the light come on, that is all I can get.

How about from AmigaDOS.... since I can boot to with no startup sequence.... what command do I send to it to read the floppy drive?  Could I do that to see if she can read the drive?

tj

I'm not sure if the 4000T disks will at least boot on the A1000. Surely WB won't load buy maybe you'll end up with some error and that would mean that the floppies are bootable so the failure would be on the floppy drive itself. You could take the floppy drive from that 4KD machine and test.

Question: If you leave the 4KT turned on with no floppy inside the drive, can you hear the constant clicking every second or so?

Other thing you can do is prepare a new floppy on the A1K, format it and run the Install command to make it bootable. In a shell window type Install DF0: and follow the prompts. Then use that disk on the 4KT, it should boot to a Shell window, that will tell you that your floppy drive is OK and then the floppies are either bad or not bootable.

[efrenmgp]

ffs system disks won't boot with anything below kickstart2.0

You'll just hear three drive clicks and nothing else.

Thanks I wasn't sure of that

So using the A4KT floppies with the A1K won't tell you anything useful

Regards,
efrenmgp