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23567Re: slug usb controller hurt?

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  • ernstjanoud
    Apr 8, 2009
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      If the PSU would be ok, a 3,3 ohm resistor would have to dissipate 7,6 Watt, so a 0,25 Watt resistor would reach its end of life very, very soon :-)

      I hope you weren't holding the resistor in your hands :-)

      Ernst

      --- In nslu2-linux@yahoogroups.com, Sébastien Lorquet <squalyl@...> wrote:
      >
      > Okay, then it's easy, I've another slug at home, with an usb stick too (it
      > has been there for more than one year!). I'll try this evening :)
      >
      > I'm surprised of this failure. Is there any visual clue the PSU has fried if
      > I disassemble it?
      > Is it repairable?
      >
      > Many thanks.
      > Sebastien.
      >
      > PS: rofl, with a colleague we just tried to load the psu with a small value
      > resistor and measured the voltage. it was enough powerful to fry a 0.25 watt
      > 3.3 ohm resistor ( ^_^ ) but now I get the christmas tree led sequence even
      > with no usb device attached :)
      > We fried the psu even more :)
      >
      > The final anwer will come this evening :)
      >
      > Moreover I just grabbed a 3A 5V psu from an old unused device. Just have to
      > adapt the right connector :)
      >
      >
      > On Wed, Apr 8, 2009 at 4:49 PM, David Given <dg@...> wrote:
      >
      > > -----BEGIN PGP SIGNED MESSAGE-----
      > > Hash: SHA1
      > >
      > > Sébastien Lorquet wrote:
      > > > when I start with the stick in place, the only thing I get for now is a
      > > > led sequence.
      > >
      > > Yeah, this is similar behaviour I had last year --- PSU failure, AFAICT.
      > > (The PSU can't quite handle the extra load of the device and the voltage
      > > drops just far enough to deeply confuse the NSLU2's power circuitry.)
      > >
      > > It's worth trying to find another 5V power supply and seeing if that
      > > fixes it.
      > >
      > > - --
      > > David Given
      > > dg@...
      > > -----BEGIN PGP SIGNATURE-----
      > > Version: GnuPG v1.4.9 (Cygwin)
      > > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
      > >
      > > iEYEARECAAYFAkncuWgACgkQf9E0noFvlzhkbgCdGCUu48ua3qXc6FuyflOGZ3m4
      > > 1usAn1oquEtlh/2DnCpKoyNKRTtrKtJ3
      > > =dARJ
      > > -----END PGP SIGNATURE-----
      > >
      > >
      > > ------------------------------------
      > >
      > > Yahoo! Groups Links
      > >
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