What does the red flashing LED inside the PX3 mean?  It's a troubleshooting 
tool.  There are actually two of them (one underneath the power supply board).  
One is controlled directly by the microprocessor, so if it is blinking the CPU 
is OK.  The other is driven by the graphics processor, so it is blinking then 
that chip is OK also.  Thanks to  Alan NA1L in email to the Yahoo KX3 group 
10/8/2014.

Cheers and 73,

Fred KE7X

Author of:
"The Elecraft K3: Design, Configuration and Operation 2nd ed"
"The Elecraft KX3 - Going for the summit"
"The Elecraft KPA500 and KAT500 - the K-Line Dream Station"
Printed, coil bound copies of these are all available at www.elecraft.com
KPA500 and KAT500 Quick Set Up Guide
http://www.ke7x.com/home/k-line-introduction-and-set-up-guide
KAT500 and KXPA500 Tuner Operation
http://www.ke7x.com/home/kat500-and-kxpa100-tuners




> -----Original Message-----
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
> David Orman
> Sent: Wednesday, February 04, 2015 1:07 PM
> To: David Anderson
> Cc: <elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] PX3 red LED flashing?
> 
> Mine does this as well, if there's a way to disable it that would be
> neat.
> I'm not sure if it's tied to some function that can be disabled or not,
> but it stands out a bit when you're operating in the dark. Not a big
> deal by any means, it's only really noticeable to me when my eyes are
> dark-adapted.
> 
> David
> 
> On Wed, Feb 4, 2015 at 1:49 PM, David Anderson <gm4...@yahoo.co.uk>
> wrote:
> 
> > Just built my PX3 and it works nicely, however I have a quick
> question
> > - I can see a red LED flashing inside, have searched for any mention
> > of this, is this normal?
> >
> > 73
> >
> > David Anderson GM4JJJ
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft@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
> > orma...@corenode.com
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@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 fc...@ece.montana.edu
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@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 arch...@mail-archive.com

Reply via email to