Re: [Discuss-gnuradio] Faulty USRP microprocessor?

[Berndt Josef Wulf]

G'day,

I haven't made any progress in finding a solution to my problem. A direct 
email to Matt (Ettus) explaining my predicament didn't receive a reply. It 
was hoped that the manufacturer of the USRP would provide some after sale 
techmical support for their products.

The USRP is no longer communicating when it was powered up after being in 
storage for the past 6 month. As mentioned in my previous email, see below, 
my suspect is the co-processor that hosts the USB interface, although I can't 
be sure. Perhaps someone on this list knows a procedure that would lead to an 
accurate diagnosis.

At this stage I'm contemplating to replace the processor. What needs to be 
considered prior to replacing this processor, e.g. does it need to be 
flashed? I'm also looking for a supplier for this chip.

Any help is very much appreciated.

73, Berndt
VK5ABN

On Tuesday 04 November 2008 22:28:38 Berndt Josef Wulf wrote:
> G'day,
>
> today I discovered that my USRP appears to have a problem. The USRP device
> is nolonger detected when connected to a PC (i386) running WinXP, Linux or
> NetBSD. I tried different systems and cables to no avail. This is with
> GNU-Radio current, but also tried with the last stable release.
>
> Power supply rail measures 3.3V after the regulator and the LED is fast
> flashing, which normally would indicate that the processor is running, but
> firmware hasn't been loaded. Signal lines from processor pins to
> connector/cable have continuity. I'm now suspecting the USB interface on
> the microprocessor chip.
>
> Has anyone had similar experience and what was the solution to your
> problem? If so, what was your solution?
>
> I really would hate the idea of having to replace the microprocessor
> because of lack of spares and in particular its package size.
>
> Any help is very much appreciated.
>
> 73, Berndt
> VK5ABN
>
>
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