[Elecraft] K3 appears to be bricked

[george allen]

Have you removed power, waited 2 minutes, then restored power?

Sent from my iPad

> On Sep 11, 2016, at 11:52 AM, Mike Murray <w0agmike at gmail.com> wrote:
> 
> I was in the process of updating my K3's firmware this morning when
> something apparently burped leaving the K3 bricked.  The radio is wired
> directly to a power supply  which also feeds a RigRunner for other stuff.
> At the time I was also using a small 12V air compressor on the RigRunner.
> I don't think it was involved, but can't say for sure.
> 
> The TX light is flashing, the display shows "MCU LD" and power button won't
> power it down.  I've tried forcing a firmware download several times,
> explicitly following the instructions in the K3 manual without success.
> The K3 Utility program can't find the rig on the prior COM port being used,
> nor on any other available COM port, so I suspect that's a major clue.
> True COM ports are not available on the PC so I'm using a StarTech 4 port
> USB converter that utilizes the FTDI chips.
> 
> Anyone have any ideas I can try???
> 
> Mike - W0AG
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k2cm.george at gmail.com