[Elecraft] MCU LD

[Dick Dievendorff]

Contact K3support at Elecraft.com. Gary has some voltage checks on the  
KIO3 to run. Also try once turning everything off (K3 power supply,  
computer) and retry the load.

Dick, K6KR


Sent from my iPhone

On Sep 6, 2009, at 2:20 PM, "Georgens, Tom" <Tom.Georgens at netapp.com>  
wrote:

> Hello -
>
>
>
> I am building a K3 kit and all was going well with the checkout and  
> test
> when I decided to download the latest version of the firmware.  The
> download failed and now the K3 displays "MCU LD" whenever it is turned
> on.  The K3 utility programs no longer can talk the to the K3.  My
> original PC was using a USB to serial cable and worked fine through  
> all
> the calibration steps.  I used another USB to serial adapter that was
> compatible with the K3 USB to serial software but it did not work
> either.  I tried yet another PC that has a native serial port, but no
> luck with that as well.
>
>
>
> In verbose mode, the utility program says it is sending ";" at various
> baud rates and I presume it is getting no response.
>
>
>
> I suppose it is possible that the serial port failed after working for
> about 10 minutes, but it seems unlikely.  All the boards seem to be
> seated well and I doubt it is a connection problem
>
>
>
> At this point, the K3 seems to have corrupted firmware, but it can no
> longer talk to a PC in order to do a new download.  Not sure what to  
> try
> next.
>
>
>
> Any suggestions welcome
>
>
>
> 73, Tom W2SC
>
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