[Elecraft] K2 RECEIVER: WHERE ARE THE SIGNALS?

[J ALBU]

Hi Manuel

Look and re-look for an
incorrectly placed component (or a component with improper orientation) this 
is the most common problem
Now in Portuguese...
Ve os componentes pois o mais frequente é teres trocado a posição 
(transistors o contrário ou os diodos).

Good luck Manel I'm very proud with you my good friend
GOD bless you

73 de Jose CT1AOZ


----- Original Message ----- 
From: "Manuel Wilches" <manuelwilches at arnet.com.ar>
To: <elecraft at mailman.qth.net>
Sent: Saturday, February 25, 2006 3:01 AM
Subject: [Elecraft] K2 RECEIVER: WHERE ARE THE SIGNALS?


> Greetings from Argentina.
> I am building K2 # 5310
> I have purchased all Rework Eliminators (they were a breeze to install, by 
> the way and are very neat indeed!) and I have all K2 options except 60 
> meters, i.e. 160mtrs - DSP - NB - K2/100 - SSB.
>
> I have completed part II of the RF board and the "Alignment and Test, Part 
> II". All values tested, calibrations, voltage measurements etc. were 
> within the specs indicated in the K2 manual. During assembly of the FP and 
> CB all tests required were also on target. I have built and used the Frq. 
> probe, the RF probe and the N0SS probe. I do not have a signal generator 
> or any other instrumentation. I have a DMM. All my Rework Eliminators are 
> plugged in.
>
> The problem: the receiver has full noise (as though it worked ok) but when 
> I connect an antenna (40 meters GP) I do not hear any signals. I heard a 
> CP4 perhaps RST 519. Extremely weak.
>
> I tried N0SS's probe and I pick up a strong signal through all test points 
> up to C225. I have no signal pick up there nor at C226 or C227. I did not 
> check W6 and W1 because I did not install those jumpers (I followed the 
> Rework Eliminators instructions that call for other steps). I do not know 
> if there is an alternative test point for those. I have been through the 
> usual checks for bad solders etc.
>
> I have used the proper solder and a controlled temp soldering station.
>
> I would very much appreciate your assistance and guidance. I have had the 
> K2 on for hours now (playing with the keyer) and there has been no change. 
> It looks great, that is for sure!
>
> Thank you very much
> 73
>
> Manuel
> LU5OM
> CT4IK
> K2 # 5310
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