. Gary has some voltage checks on the
KIO3 to run. Also try once turning everything off (K3 power supply,
> 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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