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K3 does not fully power down

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Andrew UK

K3 does not fully power down

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Hi

K3 08206, failed to power down, pressing the power button turned off the K3 display and the normal clicks were heard, but the LCD light remained on. pressing the power button again, would not bring the K3 on. Only removing the 13.8V for a few seconds and powering on brings it back. However the K3 will still not turn off properly.

I have saved the config, updated the firmware, and reset the K3 by pressing shift and powering on. I still have the same issue. I have not got anything attached to the rear apart from the Linear amp key line, and that has been removed.

It looks like a hardware fault, if someone can give me some guidance.

BR Andrew Lenton G8UUG

Dave Fugleberg

Re: K3 does not fully powering down

Do you have anything connected to the 15 pin accessory jack on the K3?
I had the same symptom once last year, and tracked it down to a wiring
fault in a homebrew accessory cable.
If you do have something connected to that jack, try unplugging it
temporarily to see if the power down issue goes away.
73 de W0ZF
On Sat, Apr 8, 2017 at 6:46 AM Andrew UK <[hidden email]> wrote:

> Hi
>
> K3 08206, failed to power down, pressing the power button turned off the K3
> display and the normal clicks were heard, but the LCD light remained on.
> pressing the power button again, would not bring the K3 on. Only removing
> the 13.8V for a few seconds and powering on brings it back. However the K3
> will still not turn off properly.
>
> I have saved the config, updated the firmware, and reset the K3 by pressing
> shift and powering on. I still have the same issue. I have not got anything
> attached to the rear apart from the Linear amp key line, and that has been
> removed.
>
> It looks like a hardware fault, if someone can give me some guidance.
>
> BR Andrew Lenton G8UUG
>
>
>
>
> --
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Andrew UK

RE: K3 does not fully powering down

Dear Dave,

I Have nothing connected to the rea, I will have to study the circuitry and see what has blown up.

Andrew

From: Dave Fugleberg [via Elecraft] [mailto:[hidden email]]
Sent: 08 April 2017 15:06
To: Andrew UK
Subject: Re: K3 does not fully powering down

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