K3 Power On

[Mike Harris]

G'day,

A while ago I reported occasional hang when powering on the K3.
Lock up which needed power down and on again to recover.

I think I know what causes it.  I switch everything off when not in
use and it is very easy for me to switch on the PSU (switcher) and
then hit the K3 power button within 1-2 seconds.  If I slow down on
powering the K3, maybe all of four to five seconds after PSU switch
on, all is OK.

So maybe it just takes a few seconds for the K3 supply rails and
logic to settle when first powered.

Regards,

Mike VP8NO

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[David Pratt]

Mike - The K3 is a software defined transceiver so needs time to boot up
and to close down.  You should always switch off your K3 with the Power
switch on the front panel.  Switching off the power at the supply would
be like shutting your computer off at the supply without first closing
down Windows.  If the K3 power is cut, it will take time to recover when
you next switch it on. That would be a risk as it might even cause some
corruption of the firmware.

73 de David G4DMP

In a recent message, Mike Harris <[hidden email]> writes
>
>I think I know what causes it.  I switch everything off when not in
>use and it is very easy for me to switch on the PSU (switcher) and
>then hit the K3 power button within 1-2 seconds.  If I slow down on
>powering the K3, maybe all of four to five seconds after PSU switch
>on, all is OK.



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[Mike Harris]

G'day,

Just in case there is some confusion, I always switch my K3 off
first and then the psu and obviously switch on the psu first and
then the K3.

Poor wording in my original post maybe.  I thought it was reasonably
clear but just in case, by switching off everything when not in use
I simply mean I switch things off when I'm no longer using them.
Saving the planet or something like that.

Regards,

Mike VP8NO


----- Original Message -----
From: "David Pratt" <[hidden email]>
To: "Mike Harris" <[hidden email]>
Cc: "Elecraft Reflector" <[hidden email]>
Sent: Saturday, February 05, 2011 12:11 PM
Subject: Re: [Elecraft] K3 Power On

> Mike - The K3 is a software defined transceiver so needs time to
> boot up
> and to close down.  You should always switch off your K3 with the
> Power
> switch on the front panel.  Switching off the power at the supply
> would
> be like shutting your computer off at the supply without first
> closing
> down Windows.  If the K3 power is cut, it will take time to
> recover when
> you next switch it on. That would be a risk as it might even cause
> some
> corruption of the firmware.
>
> 73 de David G4DMP
>
> In a recent message, Mike Harris <[hidden email]> writes
>>
>>I think I know what causes it.  I switch everything off when not
>>in
>>use and it is very easy for me to switch on the PSU (switcher) and
>>then hit the K3 power button within 1-2 seconds.  If I slow down
>>on
>>powering the K3, maybe all of four to five seconds after PSU
>>switch
>>on, all is OK.

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