K2 speaker jack question

[Eric Ward-2]

OK, a possible dumb question.  K2 finished and working FB !  Audio from the headphones is fine, but no audio from the internal speaker, or from the external speaker jack on the back.  

Receive current is 220mA, so no apparent ground short, as warned against in the manual.  All the connections look good.  Has anyone encountered this before?

Could I have gotten an external speaker jack that is supposed to be wired as in the manual rev. F, rather than in the errata rev F-12 (which is the exact opposite of the original manual)?

Thanks for any help or suggestions.
73
Eric N0HHS
K2 #6106
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[Don Wilhelm-3]

Eric,

I doubt if you got the wrong jack, but it is possible.

Check a few other things first - do you have the wires in the connector
housing correct, or are they reversed?  Are you plugging the speaker
connector to P5 on the RF Board?  A few builders have tried plugging it
into P5 on the Control Board, and of course, no speaker audio is
available there.

Are the crimp pins inserted properly into the housing?  They must be
inserted until the locking tabs secure the crimp pins - the top of the
crimp pins will be below the top of the housing and should stay in place
when the housing is mated with P5.

If you are still concerned about the jack wiring, you can check it for
continuity with an ohmmeter.  The hot side of the speaker connector
housing should have continuity with the speaker + terminal, but if you
plug a phone plug into the jack, the speaker should not show continuity,
but you should have continuity to the tip of the inserted plug.

73,
Don W3FPR

Eric Ward wrote:

> OK, a possible dumb question.  K2 finished and working FB !  Audio from the headphones is fine, but no audio from the internal speaker, or from the external speaker jack on the back.  
>
> Receive current is 220mA, so no apparent ground short, as warned against in the manual.  All the connections look good.  Has anyone encountered this before?
>
> Could I have gotten an external speaker jack that is supposed to be wired as in the manual rev. F, rather than in the errata rev F-12 (which is the exact opposite of the original manual)?
>
> Thanks for any help or suggestions.
> 73
> Eric N0HHS
> K2 #6106
> _______________________________________________
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> Post to: [hidden email]
> You must be a subscriber to post to the list.
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>
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>
>

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[AJSOENKE]

I just replaced the connector on my K2 #4887  because the internal bypass
switch that is supposed to connect the speakers when  the headphones are
unplugged wasn't making contact. Check continuity across the  bypass switch contacts
with the power off and the headphones unplugged. If it's  not a dead short you
may have a damaged  jack. Mine worked OK when new but  after 2 years of almost
constant headphone use the connection just wasn't there.  I'll dissect the
broken jack someday to see what caused the open.

Al  WA6VNN  




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[drewko]

I think I'm going to install a speaker/headphone switch on the back
panel so I can just leave the headphones plugged in all the time. Then
switch headphones & speaker as needed.

Apart from the mini-plug being relatively fragile, it's also annoying
to plug & unplug. It doesn't go very easily and I often hit the menu
button while trying to work it. I have to say, it's the only really
annoying feature I've found on the K2.

73,
Drew
AF2Z


On Fri, 01 Jun 2007 21:37:02 -0400 (EDT), Al  WA6VNN   wrote:

>I just replaced the connector on my K2 #4887  because the internal bypass
>switch that is supposed to connect the speakers when  the headphones are
>unplugged wasn't making contact. Check continuity across the  bypass switch contacts
>with the power off and the headphones unplugged. If it's  not a dead short you
>may have a damaged  jack. Mine worked OK when new but  after 2 years of almost
>constant headphone use the connection just wasn't there.  I'll dissect the
>broken jack someday to see what caused the open.
>
>Al  WA6VNN  
>
>
>

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