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

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

Postby ors0n » Tue Apr 25, 2017 11:56 am

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

Postby Maeke » Wed Apr 26, 2017 12:45 pm

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

Postby Lynxman » Wed Apr 26, 2017 1:51 pm

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

Postby ors0n » Thu Apr 27, 2017 10:04 am

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

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

Postby ors0n » Thu Apr 27, 2017 10:18 am

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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Posts: 286
Joined: Sun Mar 13, 2016 1:54 pm

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

Postby Maeke » Thu Apr 27, 2017 6:34 pm

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


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