K2 Ke-Klonk !!

[f5vhp]

I recently acquired K2 #0957 (f/w 2.02 , 1.02)
ATU, SSB module, NB module, 160m and Audio Filter modules are fitted.
It makes a loud "Ke-Klonk" at switch on and whenever any of the following buttons are used:
Band =/-
Ant 1/2, TUNE
NB, LEVEL
MODE
Pre / Att
XFil
and, worst of all each time cw transmission is dropped, making semi or full break-in impossible.
The Audio gain control makes no difference.

It makes the same Ke-Klonk when scrolling the menu between "OPT" and "ANT", "RIT" and "ACC" and at every step through the "ANT" sub menu.
Removing the ATU made no difference.
So I'm wondering where to look next ?



William
F5vhp






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[vk2rq]

Maybe there is an issue with the muting circuitry, around Q6 and Q7?

73, Matt VK2RQ

> On 2015-maj-13, at 05:09, [hidden email] wrote:
>
> I recently acquired K2 #0957 (f/w 2.02 , 1.02)
> ATU, SSB module, NB module, 160m and Audio Filter modules are fitted.
> It makes a loud "Ke-Klonk" at switch on and whenever any of the following buttons are used:
> Band =/-
> Ant 1/2, TUNE
> NB, LEVEL
> MODE
> Pre / Att
> XFil
> and, worst of all each time cw transmission is dropped, making semi or full break-in impossible.
> The Audio gain control makes no difference.
>
> It makes the same Ke-Klonk when scrolling the menu between "OPT" and "ANT", "RIT" and "ACC" and at every step through the "ANT" sub menu.
> Removing the ATU made no difference.
> So I'm wondering where to look next ?
>
>
>
> William
> F5vhp
>
>
>
>
>
>
> ______________________________________________________________
> 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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[David Woolley (E.L)]

Sounds like normal behaviour, i.e. the relays reconfiguring the internal
signal paths.  The one exception is CW keying one.  No relays should
trip for key up and down.

Make sure that you can recognize the normal relay clicks so that you can
tell if any of the other sounds are not normal.

--
David Woolley
Owner K2 06123

On 12/05/15 20:09, [hidden email] wrote:

> I recently acquired K2 #0957 (f/w 2.02 , 1.02)
> ATU, SSB module, NB module, 160m and Audio Filter modules are fitted.
> It makes a loud "Ke-Klonk" at switch on and whenever any of the following buttons are used:
> Band =/-
> Ant 1/2, TUNE
> NB, LEVEL
> MODE
> Pre / Att
> XFil
> and, worst of all each time cw transmission is dropped, making semi or full break-in impossible.
> The Audio gain control makes no difference.
>
> It makes the same Ke-Klonk when scrolling the menu between "OPT" and "ANT", "RIT" and "ACC" and at every step through the "ANT" sub menu.
> Removing the ATU made no difference.
> So I'm wondering where to look next ?

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