K2 Internal Speaker Dead

[Mike Monger]

Hi Fellow Elecrafters,

My K2 internal speaker is dead.  

I had messed up a crimp pin in the initial stages of assembly and so was not even using the internal speaker but only using headphones.  I discovered tonight that I had an extra crimp pin.  So, I got it installed. plugged to P5 ( I think it is) but no audio from internal speaker or from external speaker jack, only through headphones.  I checked the archives and found that there have been problems in the past and that apparently it comes back to some bad contacts in the headphone jack.  So, should I just get Elecraft to send me another headphone jack or should I check something else??  

Thanks in Advance,

Mike
KT2E
K2 4777
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[Kevin Rock]

Hi Mike,
    My K2's phone jack has been broken for over a year.  I can't afford to
have it replaced.  But your's should still be under warranty.  Get it
replaced now.  I am not sure how long they last though.  I had an email
 from Gary Surrency explaining what happens to the jacks and it sounds like
they break quite often.  One day I may replace it but I will try to find
one which lasts longer.
    I did not know it was broken for the longest time since I use my
headphones exclusively.  Maintains domestic amity :)  But I was going to
use the internal speaker while running the Elecraft booth station and
found the problem.  So I used a computer speaker, power supply, and a y
cable.  Worked pretty well and got a number of folks to the booth just to
copy the contacts.
    Good luck,
       Kevin.   KD5ONS


On Sat, 16 Apr 2005 00:32:13 -0400, Mike Monger <[hidden email]> wrote:

> Hi Fellow Elecrafters,
>
> My K2 internal speaker is dead.
>
> I had messed up a crimp pin in the initial stages of assembly and so was
> not even using the internal speaker but only using headphones.  I
> discovered tonight that I had an extra crimp pin.  So, I got it
> installed. plugged to P5 ( I think it is) but no audio from internal
> speaker or from external speaker jack, only through headphones.  I
> checked the archives and found that there have been problems in the past
> and that apparently it comes back to some bad contacts in the headphone
> jack.  So, should I just get Elecraft to send me another headphone jack
> or should I check something else??
>
> Thanks in Advance,
>
> Mike
> KT2E
> K2 4777

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[Ron D'Eau Claire-2]

Mike KT2E wrote:
no audio from internal speaker or from external speaker jack, only through
headphones.  I checked the archives and found that there have been problems
in the past and that apparently it comes back to some bad contacts in the
headphone jack.  So, should I just get Elecraft to send me another headphone
jack or should I check something else??  

Reply: --------------------

If you get the speaker wires backwards this will happen too. One side of the
speaker wiring is grounded and reversing them grounds out the audio to the
speaker.

There have been issues with K2 headphone connectors, but I have no idea how
widespread it is. My K2 is 5 years old and the original headphone jack is FB
and I'm constantly plugging and unplugging phones in that jack.

One thing I *never* do with these little jacks is to plug in a large adapter
for a 1/4 inch phone plug, etc., so  the jack has to support it's weight. I
don't know if any others have done that, but I try to be gentle with the
miniature jacks.  

Ron AC7AC



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[Don Wilhelm-3]

Mike,

Before concluding that the headphone jack is at fault, check the wiring to
the external speaker jack and the plug at the end of the wire.  If the
conductors are reversed at one of these points, the audio is shorted to
ground.

The other thing you can do is put the plug into the RF Board connector and
check for continuity between control board P3 pins 7, 8 and 10 through the
headphone jack and on to the external speaker jack and the speaker.  The
ohmmeter will show you where the discontinuity is occurring.

The headphone jack problem is rare - only a few occurrances have been
reported on the reflector in the over 5 years that I have been
participating, so put it down low on the list of possible 'things that could
be wrong' until proven otherwise.

73,
Don W3FPR

> -----Original Message-----
>
> My K2 internal speaker is dead.
>


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