My floppy drive can't read on my Atari 520STFM, but works fine on PC

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ors0n
Atarian
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My floppy drive can't read on my Atari 520STFM, but works fine on PC

Post by ors0n »

This is my first post here so I would like to say hello
Internal floppy in my Atari ST 520 STFM worked fine until now. When floppy try to read, heads moves several times forward about 2 millimeters and than back to starting position (watch here https://youtu.be/HcU7EWwd-F8). I checked floppy drive on my PC and there works fine (read, format, write). Did anyone have a similar issue? Any idea? Bad PSU or floppy controller?
Thanks all for any replies and help.
/ors0n
Maeke
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Re: My floppy drive can't read on my Atari 520STFM, but works fine on PC

Post by Maeke »

did you recap (or change) your psu? It's the first step in troubleshooting.
Lynxman
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Re: My floppy drive can't read on my Atari 520STFM, but works fine on PC

Post by Lynxman »

If the drive works on a PC, the trouble may be caused by the 7406. I exchanged this IC on some Ataris with floppy drive trouble and almost it fixed the problem.
ors0n
Atarian
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Joined: Fri Apr 08, 2016 9:17 pm
Location: Poland

Re: My floppy drive can't read on my Atari 520STFM, but works fine on PC

Post by ors0n »

Maeke wrote:did you recap (or change) your psu? It's the first step in troubleshooting.
Thanks for your reply. No i didn't yet. I was hoping that it will not be necessary. I will start from that.
ors0n
Atarian
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Joined: Fri Apr 08, 2016 9:17 pm
Location: Poland

Re: My floppy drive can't read on my Atari 520STFM, but works fine on PC

Post by ors0n »

Lynxman wrote:If the drive works on a PC, the trouble may be caused by the 7406. I exchanged this IC on some Ataris with floppy drive trouble and almost it fixed the problem.
Thanks for advice. I think, first i will recap PSU. If problem will still exist, I will try exchange 7406.
Maeke
Captain Atari
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Re: My floppy drive can't read on my Atari 520STFM, but works fine on PC

Post by Maeke »

and it's only the first and second steps, i hope it'll be enough.
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