[USRP-users] N200 seems totally dead

Sivan Toledo stoledo at tau.ac.il
Wed Apr 17 06:36:03 EDT 2013


Measuring the voltages at the outputs of the regulators showed that the
3.3V regulation is broken. The voltage at J104 is only 1V, not 3.3V. The
1.2V and 2.5V  outputs seem fine.


On Wed, Apr 17, 2013 at 12:25 PM, Sivan Toledo <stoledo at tau.ac.il> wrote:

> One of our N200 seems to have died suddenly. It was working fine and then
> the UHD program we were running complained about being unable to send
> control packets, we did not get any more samples, and our program exited.
>
> We tried to power cycle the N200 by removing the power adapter and
> plugging it back in, but it did not turn on properly. None of the 6 LEDs
> lights. The orange LED in the Ethernet connector lights when a cable is
> plugged it, but that's it. The fan runs.
>
> We tried to power cycle it a few more times but always got the same
> result. We tried to plug in power while S2 is pressed, but the LEDs are
> still all off.
>
> The unit was not in the middle of any kind of firmware/image update, just
> running normally against a UHD program.
>
> Any advice on what to do next would be appreciated.
>
> Thanks, Sivan
>
>
>
>
>
>
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