P3 problem

[N1IX-2]

I bought a used P3 from an estate. Unfortunately it doesn't power up.

I am sure that it has 12+ volts and that it is jumpered correctly.

I can hear the relay click when I press the power button.

Anything I may be overlooking? I have actually read and reread the manual.

 

Dave N1IX

 

 

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[ke9uw]

So on page 38 in the manual, how are the jumpers configured? Mine is set up with Jumper across 2 and 3. When power is applied, the P3 turns on, but the power switch can still turn it off or on as long as power is present.

Chuck KE9UW
[hidden email]

Sent from my iPad

> On Sep 7, 2019, at 7:23 PM, "[hidden email]" <[hidden email]> wrote:
>
> I bought a used P3 from an estate. Unfortunately it doesn't power up.
>
> I am sure that it has 12+ volts and that it is jumpered correctly.
>
> I can hear the relay click when I press the power button.
>
> Anything I may be overlooking? I have actually read and reread the manual.
>
>
>
> Dave N1IX
>
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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[Russ W9RB]

Hey Dave,
Is the P3's 12v supplied from the 12v aux port (rca Jack)?
If your K3 is a few years old, you might need the K312mdkt.
This boosts current output from .5 to 1.0 amps.



-----
73, Russ - W9RB
--
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[Don Wilhelm]

Dave,

What are you using to power the P3?  Try a good stiff power source - not
a wall-wart.

If the power source cannot provide the current required at the voltage
required, then you will still hear a relay click as the P3 tries to
power up, but the current or voltage from the power source drops
significantly.

If you are powering the P3 from the AUX DC jack on the K3, and you have
an early K3, the current is limited to 0.5 amps before the resettable
fuse opens and is barely enough for the P3, especially if it has the
SVGA option.

73,
Don W3FPR

On 9/7/2019 8:23 PM, [hidden email] wrote:
> I bought a used P3 from an estate. Unfortunately it doesn't power up.
>
> I am sure that it has 12+ volts and that it is jumpered correctly.
>
> I can hear the relay click when I press the power button.
>
> Anything I may be overlooking? I have actually read and reread the manual.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html
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