[Elecraft] Fwd: K1-4 s/n. 3206

[Don Wilhelm]

Scotty,

It is unfortunate that Elecraft has not been successful in their 
attempts to have the vendor beef up that switch.
Inside that headphone jack is a little switch operated by a plastic arm 
- that is the weak point - the arm that operates the switch breaks and 
the user is left either with either a non-functional speaker or a 
speaker that operates all the time (usually non-functional).  Sorry 
about the bad news, but the better news is that replacing he headphone 
jack should fix it.  Hopefully the new jack will last longer - it 
usually does, but there is no guarantee other than the Elecraft 1 year 
warranty on parts.

73,
Don W3FPR

On 10/5/2013 10:21 PM, Scotty Long wrote:
>   First test was good. Second test no continuity or in the M-ohms...
>
> This is a newer K1 but it looks like the Jack is bad...
>
> Sent from my Verizon Wireless 4G LTE DROID
>
> Don Wilhelm <w3fpr at embarqmail.com> wrote:
>
> Scotty,
>
> That is strange to happen all of a sudden unless the headphone jack has
> failed.
> First make certain that the speaker cable is correctly inserted into P2
> and that the crimp pins on the speaker cable are correctly inserted into
> the housing.  Many builders have trouble with the crimp pins.  When
> correctly inserted in the housing, you can look into the rectangular
> holes of the housing and see the locking projection on the crimp pins
> properly locked onto the rectangular opening.
>
> If your housing and crimp pins are OK, then remove the bottom cover and
> proceed as follows with your DMM
> 1 - Locate the switch on the back of your headphone jack - these are the
> 3 solder pads at the rear of the jack. Check for continuity between P2
> pin 1 and one of the outer two pins of that switch (I forget which one
> it is, so check both - you should find continuity between P2 pin 1 and
> one of the outer ones,
>
> If that was successful -- (if not, there is a soldering problem between
> the headphone jack and P2).
> 2 - Leave one of your DMM Probes on P2 pin 1 and then (with the
> headphone plug removed), check for continuity from the center pin to P2
> pin 1.
>
> If the first test showed continuity, but the 2nd did not, then you have
> a bad switch in the headphone jack.
>
> If this is an older K1, then I would suspect the headphine jack has
> failed, but if it is a new K1, I would first suspect the crimp pins on
> the speaker cable.
>
> 73,
> Don W3FPR
>
> On 10/5/2013 9:26 PM, Scotty Long wrote:
>> Sent from my Verizon Wireless 4G LTE DROID
>>
>> -------- Original Message --------
>> Subject: Re: [Elecraft] K1-4 s/n. 3206
>> From: Scotty Long <nu0s at hotmail.com>
>> To: don at w3fpr.com
>> CC:
>>
>> Put all back together less the tuner now internal speaker is not working. Headphone jack normal audio. Any ideas speaker and wiring check good...
>>
>>
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