[Elecraft] K2 BFO not oscillating

[Don Wilhelm]

Conway,

It is great news that you have found the source of the problem.
Onward to the rest of the K2 build, and I wish you no more unsoldered pins.

73,
Don W3FPR

Conway Yee wrote:
>> expected - Q24 does not pass the BFO signal on receive due to the
>> absence of voltage on the VALC signal line.
>>     
>
> Thats it!  Your clue led me to trace V_{alc} back to the control board.
> I NEVER had a non-zero measurement on V_{alc} even though I was in CAL
> FCTR.
>
> It turns out that I forgot to solder pin 1 on U10 on the control board.
> Oops.  Once soldered, TP2 is happy.
>
> tnx.
> Conway Yee
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com 
> Version: 9.0.733 / Virus Database: 271.1.1/2667 - Release Date: 02/04/10 02:35:00
>
>