[Elecraft] PX3 red LED flashing?

[Cady, Fred]

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-bounces at mailman.qth.net] On Behalf Of
> David Orman
> Sent: Wednesday, February 04, 2015 1:07 PM
> To: David Anderson
> Cc: <elecraft at 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 <gm4jjj at 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
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