Archived from groups: microsoft.public.broadbandnet.hardware (
More info?)
Hi GHR:
Well, it's definitely a fuse. (I just saw the JPG) That almost certainly
means an overload of some sort occurred. By the way, how did you find a
replacement for it or did you just jumper another fuse around it?
As for the four LEDs glowing green, I'm not sure if that represents an error
code or whether it means that some small amount of current is entering the
unit causing them to glow. Probably something else within the MN 700 is
damaged and it may be difficult to find without some sort of technical data.
If you can determine who manufactured the MN 700 for Microsoft, you may be
able to gain access to a schematic or troubleshooting guide. According to
information on the box, the MN 700 base station was made in China. I don't
even know where to start looking. Possibly try to use a search engine like
Google to find information if any is available.
One problem you may run into - The MN 700 contains ROM (stores firmware) and
if that has been damaged, the unit is probably beyond any kind of economical
repair. Good luck and let us know how things turn out.
Regards.
"GHR" <ghrizzi@hotmail.com> wrote in message
news:220201c47ce9$a5311ce0$a401280a@phx.gbl...
> Thx CS for your reply.
> You can see what I call a fuse here
> (http://ghrizzi.freeservers.com/circuito.jpg). I've
> reading a little bit after my last post, and I'm not 100%
> it's a fuse now.......but I'm not sure is something else
> either :S
>
> I may have blown something more inside the MN700, but
> before giving up, I would like to verify that those 4
> green leds don't represent an error code. I've trying to
> look around to see if I find something about it, but
> nothing shows up. Do you know where I can find more info
> on the electronics of the MN700?
>
> Thx,
> GHR
>
> >-----Original Message-----
> >First, are you sure you replaced a fuse? You say it's
> a "strange fuse".
> >How do you know it's a fuse? Assuming you're correct:
> >
> >If the fuse inside of the MN 700 was blown, then it's
> fairly obvious there
> >was either a short or overload of some sort which caused
> the fuse to burn
> >out. The adaptor you purchased (220V to 12V 1A) may
> have overloaded the
> >internal power input of the MN 700 causing the fuse to
> burn out. The
> >original AC - DC adaptor for the MN 700 is rated at
> 120V, 1000MA (1A) and 60
> >Hz. Just because the output appears to be the same for
> both adaptors, that
> >may not necessarily be true.
> >
> >Most countries outside of the US and Canada that use
> 220V house power also
> >use 50 Hz. I'm not sure if that would make any
> difference (probably not
> >unless it was a timing device) but I know from
> experience when traveling
> >outside the US, strange things happen to electronic
> devices when the correct
> >voltage/current/frequency is not used.
> >
> >I would guess (and it's just a guess) that something has
> suffered damage
> >internally to the MN 700. If the power LED is not on
> and the four output
> >LEDs are glowing green, that indicates that some power
> is entering the unit.
> >Unless you know how to repair the MN 700 and can replace
> damaged parts, you
> >probably have a dead base station.
> >
> >"GHR" <ghrizzi@hotmail.com> wrote in message
> >news:1df901c47cdd$74571fe0$a301280a@phx.gbl...
> >> I checked the voltage for the new adapter, and it
> worked
> >> fine. Also I check the polarity of the pin conector to
> >> match the MN700.
> >>
> >> Even more, I bought a 220v - 110v adapter, and plugged
> >> the original to (so I have a chain of 220v - 110v -
> >> 12vDC), and it doesn't work either.
> >>
> >> I narrowed down the non power symptoms to a strange
> fuse
> >> inside the MN700 (as I have no guarantee, I opened
> >> it
). But once I fix that, I'm still getting the 4
> eth
> >> leds green, and nothing else (no blinking, no power
> led,
> >> no yellow led, no nothing). That sounds to me as a post
> >> error, but I have no clue about what kind of error. Do
> >> you now of any documentation about what those leds
> mean?
> >> (besides what comes with the mn700 itself, that aren't
> >> helpfull at all for this).
> >>
> >> BTW, the MN700 has two diodes just after the fuse, to
> >> protect itself about wron polarity in the power source.
> >> So I didn't broke it by having the wrong polarity (I'm
> >> sure I had it right, but the diodes confirm me it won't
> >> affect them).
> >>
> >> >-----Original Message-----
> >> >Well since you are not in the USA or Canada Microsoft
> >> Technical support
> >> >will not even talk to you. As the router in only sold
> >> in the USA &
> >> >Canada. We only use 110 Volts here. It does sound
> like
> >> you didn't
> >> >check both the voltage & Amperage on the output of the
> >> MN-700.
> >> >
> >> >GHR wrote:
> >> >
> >> >> Hi there,
> >> >>
> >> >> In my last trip to EEUU I bought the MN700. Tested
> it
> >> on
> >> >> the hotel, and worked jaust fine.
> >> >>
> >> >> Back home, I bought another power source, as locally
> >> we
> >> >> use 220v instead of 110v. So i bought another 220v-
> >> 12v,
> >> >> 1A adapter, with the same pinout that the original
> (I
> >> >> don't like to buy 220v-110v adapters, as that
> requires
> >> to
> >> >> keep plugging the original adapter as well).
> >> >>
> >> >> When I plugged it at home with this new adapter, it
> >> won't
> >> >> work. I just got the four eth lights green (no
> blink),
> >> >> and that's it. Sometimes, it may show the yellow
> light
> >> as
> >> >> if it was booting, but it never turned to green.
> >> >>
> >> >> Now it doesn't do even that. It doesn't shows any
> >> light
> >> >> at all.
> >> >>
> >> >> Does anyone had an experience like that? Is there a
> >> fuse
> >> >> or something inside that I may had burned?
> >> >>
> >> >> Thx you all,
> >> >> GHR
> >> >
> >> >.
> >> >
> >
> >
> >.
> >