Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

[n6hz]

Hi David, 

I'd prefer to have folks that are experiencing this problem email me
directly.  That way I can determine the best resolution path. The fix
involves replacing a surface mount capacitor which is located under the
power supply board on the front panel board. 

Kindly, 

Paul





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Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

[David Orman]

Would you be willing to share this with the list? I'm curious as to what's
entailed/what the modification does and how it might help!

Thank you,
David

On Mon, Feb 13, 2017 at 11:00 AM, n6hz  wrote:

> Jack,
>
> I'll bet your PX3 needs a capacitor mod.  Please email me directly, my
> email
> is pauls at you know where dot com.
>
> Kindly,
>
> Paul
>
>
>
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> on-KXPA100-loses-mind-tp7626738p7626803.html
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Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

[n6hz]

Jack, 

I'll bet your PX3 needs a capacitor mod.  Please email me directly, my email
is pauls at you know where dot com. 

Kindly, 

Paul 



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Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

[Jack Spitznagel]

Hi Brian,

Well it is usually about 65F(~18C) in the shack this time of year unless 
I turn on the space heater. Not really "cold" per se. The PX3 will 
misbehave on start up or after having been turned off for about 5 min. 
even in warmer times. I guess what I mean by cold is different from 
Canadian cold... :)


Thanks for pointing that behavior out though... temperature may be an issue.

Jack - KD4IZ


On 2/12/2017 16:19, Brian Waterworth wrote:


>>When the PX3 is powered on "cold", it takes about 5 minutes for the
display to light up.


Hi Jack,

I recently experienced something similar to your PX3 situation.  When 
you said "cold", I immediately perked up.


During winter field day, I decided to take my PX3 with me.  Our club 
worked outdoors in about -2C degree weather. The trailer I was in had 
a couple of portable space heaters.  It felt like they were pumping 
out one BTU each :-).  By the time I had the station setup, the temp 
increased to about 9C, maybe.  It was still cold and I had to wear a 
coat.  Anyway, I digress.


When I powered on the PX3, the display was dark.  Picked it up to hear 
the click of the power on.  I heard a click. H.  I tried a couple 
of times.  I disconnected all the inter-connect cables and still no 
display.  I was a bit cold and had just finished exerting a lot of 
energy with the setup (antenna as well), that I just left it 
disconnected and put it away.  I was a bit dejected, but I had to 
focus on the task at hand, because WFD was going to start in moments.  
I should have left it turned on for a little while to see if the 
display came back on after the internal circuitry warmed up a bit.  
But that never occurred to me because every other display in my 
station came to life immediately.


After the PX3 had a chance to settle at home in the warmer climes of 
my shack, I connected everything back up and lo and behold, the PX3 
display lit up.  I was quite relieved.  I wrote off the experience to 
the fact that the PX3 didn't like the cold weather.  I don't either :-)


Anyway Jack, I am happy to be another voice when you go to Elecraft 
support regarding the PX3 display not turning on when the unit is 
cold.  I don't know the actual temperature that the PX3 doesn't like.  
But I never had this issue before.  I can turn on the PX3, when in the 
house, and it comes on immediately after having sat for days in my 
basement shack.


Regards,
Brian
VE3IBW








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Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

[Brian Waterworth]

> >>When the PX3 is powered on "cold", it takes about 5 minutes for the
> display to light up.
>

Hi Jack,

I recently experienced something similar to your PX3 situation.  When you
said "cold", I immediately perked up.

During winter field day, I decided to take my PX3 with me.  Our club worked
outdoors in about -2C degree weather.  The trailer I was in had a couple of
portable space heaters.  It felt like they were pumping out one BTU each
:-).  By the time I had the station setup, the temp increased to about 9C,
maybe.  It was still cold and I had to wear a coat.  Anyway, I digress.

When I powered on the PX3, the display was dark.  Picked it up to hear the
click of the power on.  I heard a click.  H.  I tried a couple of
times.  I disconnected all the inter-connect cables and still no display.
I was a bit cold and had just finished exerting a lot of energy with the
setup (antenna as well), that I just left it disconnected and put it away.
I was a bit dejected, but I had to focus on the task at hand, because WFD
was going to start in moments.  I should have left it turned on for a
little while to see if the display came back on after the internal
circuitry warmed up a bit.  But that never occurred to me because every
other display in my station came to life immediately.

After the PX3 had a chance to settle at home in the warmer climes of my
shack, I connected everything back up and lo and behold, the PX3 display
lit up.  I was quite relieved.  I wrote off the experience to the fact that
the PX3 didn't like the cold weather.  I don't either :-)

Anyway Jack, I am happy to be another voice when you go to Elecraft support
regarding the PX3 display not turning on when the unit is cold.  I don't
know the actual temperature that the PX3 doesn't like.  But I never had
this issue before.  I can turn on the PX3, when in the house, and it comes
on immediately after having sat for days in my basement shack.

Regards,
Brian
VE3IBW

>
>
>
>
>
>
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Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

[Dick Dievendorff]

If the kxpa100 power slide switch is OFF, the amp depends on periodic polls 
from the kx3 to keep it on.

Dick, K6KR

> On Feb 12, 2017, at 14:39, Don Wilhelm  wrote:
> 
> Jack,
> 
> It would seem that you have tackled the most obvious stuff.
> I don't know whether you have a bad display or not, so I suggest you contact 
> K3support to see if they might have seen a problem like that.
> 
> I have heard about prior problems with PA MODE turning off, but I don't 
> recall what is to be done about it.  A fault in the KXPA100 can cause it, and 
> the support folks may want a fault report from KXPA100 Utility.
> 
> 73,
> Don W3FPR
> 
>> On 2/12/2017 1:51 PM, Jack Spitznagel wrote:
>> All, (particularly Don or one of the kind folks at Elecraft support)
>> 
>> There are two seemingly interrelated problems in this message that may
>> indeed be independent.
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Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

[Don Wilhelm]

Jack,

It would seem that you have tackled the most obvious stuff.
I don't know whether you have a bad display or not, so I suggest you 
contact K3support to see if they might have seen a problem like that.


I have heard about prior problems with PA MODE turning off, but I don't 
recall what is to be done about it.  A fault in the KXPA100 can cause 
it, and the support folks may want a fault report from KXPA100 Utility.


73,
Don W3FPR

On 2/12/2017 1:51 PM, Jack Spitznagel wrote:

All, (particularly Don or one of the kind folks at Elecraft support)

There are two seemingly interrelated problems in this message that may
indeed be independent.


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