K3 No. 8527, CMP/PWR-Control not responding

[Arne Henrik Jensen]

Hello,

 

The CMP/PWR-Control on my K3 has ceased working. I can switch between the
two functions by tapping the knob and the present setting of Compression and
Power respectively shows up shortly on the display. But nothing happens when
turning the knob and I am stuck with the present settings. I have updated
the firmware (MCU=5.60) and run the TX Gain calibration. But the problem
with the CMP/PWR-Control remains and I suspect that the encoder has
developed a fault. Suggestions?

 

73 de Arne, OZ9VA

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[Don Wilhelm]

Arne,

Yes, I also suspect the encoder has gone bad.
You can replace it yourself if you have de-soldering capability.  If
not, your K3 will have to go back to Elecraft.  Contact
[hidden email] to order the encoder, or if you prefer to send it in
for repair, contact [hidden email] to request an RSA.

73,
Don W3FPR

On 2/5/2018 9:13 AM, Arne Henrik Jensen wrote:

> Hello,
>
>  
>
> The CMP/PWR-Control on my K3 has ceased working. I can switch between the
> two functions by tapping the knob and the present setting of Compression and
> Power respectively shows up shortly on the display. But nothing happens when
> turning the knob and I am stuck with the present settings. I have updated
> the firmware (MCU=5.60) and run the TX Gain calibration. But the problem
> with the CMP/PWR-Control remains and I suspect that the encoder has
> developed a fault. Suggestions?
>
>  
>
> 73 de Arne, OZ9VA
>
> ______________________________________________________________
> 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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[Jorge Mejia P]

Hello Arne
I had the exact sam situation with one of my two K3s serial 377 something .The power control sometimes did not work or if I wanted to increase power it went backwards, same with the CW pot. Elecraft suggested to replace them , It's not fun at all and requires patience, pay attention when you disassemble the front panel, so you can fix it back when the pots are replaced.
Good luck if you decide to replace them, its worth it  since it will fully recover tour radio.

Jorge hk4cze

Sent from my iPad
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[Thomas Kluge-2]

Hi Arne,

A few years ago I had an issue with one of the push buttons at one of
the encoders (K3, SN #1160). This problem resulted in a complete mix-up
of the function assignments of almost all buttons in the front panel -
so I had to repair it. I decided to exchange all 4 encoders - because
the types were changed in the meantime and the push feeling is
different. As already written in an other comment: It was not really
fun and not so easy. And the end I was quite happy when I powered it up
and everything was working again (and nothing else got broken during
the repair)... You may have already the latest encoder revision - in
this case it's "only" one to replace...
The following web page was quite useful:
http://www.n5na.net/s9y/index.php?/archives/26-Replacing-Elecraft-K3-Pu
sh-Button-Encoders.html

Best 73

Tom, DL3DTH


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