[Elecraft] K2 Initial Tests

[Brian Denley]

Sorry about that Don.  I didn't realize that until I went back and started 
the K2 up again to looki for symptoms.  I am disassembling the K@ today and 
I will look for soldering issues.  I will pay special attention to U2 as it 
controls all the buttons and knobs.  As I mentioned before, the Keyer knob 
seems to work normally and the power knob at least causes the P number to 
change but it also causes the Keyer speed number to change somewhat.  I have 
yet to find any button, other than the power on-off button, that responds. 
Thanks for the help and I will report back.

Don: as a matter of courtesy, do I respond back to you or the group?
Thanks
Brian Denley
http://home.comcast.net/~b.denley/index.html


----- Original Message ----- 
From: "Don Wilhelm" <don at w3fpr.com>
To: "Brian Denley" <b.denley at comcast.net>
Sent: Sunday, June 27, 2010 10:48 AM
Subject: Re: [Elecraft] K2 Initial Tests


> Brian,
>
> You didn't say anything about the buttons not working before.  First step 
> is to re-flow the soldering on the entire front panel.
>
> 73,
> Don W3FPR
>
> Brian Denley wrote:
>> Don:
>> Thanks and I will resolder those connections but it bothers me that none 
>> of the buttons respond at all.  Only the encoder seems to work properly.
>> Brian Denley
>> http://home.comcast.net/~b.denley/index.html
>>
>>
>> ----- Original Message ----- From: "Don Wilhelm" <w3fpr at embarqmail.com>
>> To: "Brian Denley" <b.denley at comcast.net>
>> Cc: "Elecraft Reflector" <elecraft at mailman.qth.net>
>> Sent: Saturday, June 26, 2010 10:56 PM
>> Subject: Re: [Elecraft] K2 Initial Tests
>>
>>
>>> Brian,
>>>
>>> I would reflow the soldering of the power control pot - make certain 
>>> your heat the solder pad adequately.
>>>
>>> If your soldering iron is not 700 to 750 deg/F, turn the temperature up.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> Brian Denley wrote:
>>>> After my tilt-bail struggle, I moved on the the initial test of the K2 
>>>> with mixed results:
>>>>
>>>> After setting all pots to the recommended positions, I started up the 
>>>> K2 and all went according to the manual.  I got the INFO 201 followed 
>>>> by the frequency (7100.00C).
>>>> After restart, the Elecraft logo came on and then the frequency as 
>>>> expected. Intermittantly, however, "P 14.8" kept coming up alternating 
>>>> with the frequency display.  I could only make this stop by increasing 
>>>> the power away from minimum.  In addition, tapping the display button 
>>>> had no efffect at all.  The encoder test went fine, with the frequency 
>>>> changing nicely.  I noticed that the keyer knob changed the keyer 
>>>> speed, but so did the power knob when I rotated it.  The power reading 
>>>> also changed.
>>>>
>>>> I will keep looking but would appreciate any ideas.
>>>> Thanks
>>>> Brian Denley
>>>> http://home.comcast.net/~b.denley/index.html
>>
>>