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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Trev on June 23, 2009, 09:24:22 PM

Title: A1200 Floppy Issues
Post by: Trev on June 23, 2009, 09:24:22 PM

So, I have a NOS A1200 1D4 board (NOS is arguable--it's slightly bowed and the shielding on the connectors is oxidized, while the board I'd been using for the last ten years looks brand new), and every floppy drive I attach to it seeks three times then fails to read the inserted disk. I've seen the issue posted before, but without an accompanying resolution. Any ideas?

Title: Re: A1200 Floppy Issues
Post by: amiga92570 on June 23, 2009, 11:06:04 PM

Make sure your using the correct cable without twist. Try another cable. Can you format a floppy, if you can format and read a floppy but cannot read original floppy disks the Drive may be out of alignment. If however you say you tried multiple drives I would think all should not be misaligned.

Title: Re: A1200 Floppy Issues
Post by: Trev on June 23, 2009, 11:17:47 PM

Quote from: amiga92570;513178

Make sure your using the correct cable without twist. Try another cable. Can you format a floppy, if you can format and read a floppy but cannot read original floppy disks the Drive may be out of alignment. If however you say you tried multiple drives I would think all should not be misaligned.

Yeah, I've tried multiple known good drive and cable combinations. I think formatting a floppy produced the same result--three seeks followed by an error from the format tool--but I'll try it again just to be sure. But yeah, I don't think it's an alignment issue.

Title: Re: A1200 Floppy Issues
Post by: CSixx on June 23, 2009, 11:51:32 PM

Does it work if you write protect the disk?
My A3k will use write protected disks fine... If I stick in one that does not have write protect on, it will do as you describe. And further, once the disk has been inserted without write-protect, it is ruined... (well on my machine anyway)

Title: Re: A1200 Floppy Issues
Post by: Trev on June 24, 2009, 01:35:01 AM

Quote from: CSixx;513190

Does it work if you write protect the disk?
My A3k will use write protected disks fine... If I stick in one that does not have write protect on, it will do as you describe. And further, once the disk has been inserted without write-protect, it is ruined... (well on my machine anyway)

The write protect tab doesn't make a difference.

Title: Re: A1200 Floppy Issues
Post by: CLS2086 on June 24, 2009, 09:26:06 PM

do you have an other amiga ?
Possibly half dead control chips, or old grease in your drive