[Elecraft] Cannot hear internal ref. signal

[John Bonk]

Update:

After some coaching from Gary and another gentleman on the reflector, I was
able to use my wideband noise generator to inject a signal and traced it
down to one missing capacitor near U1.  After that, I finished Alignment
phase II, installed the rest of the parts and completed phase II with no
issues.  

Tonight will be a final test & tune and try and get on the airwaves.  I just
received two cans of water-soluble flux remover in the mail and I can turn
my attentions to my other dead-in-the-water K2 next week.

I highly recommend the toroid winding service.  Mychael has always gotten
them in the mail quickly and for a guy on a busy schedule like me. This is
money well spent for the time and frustration saved.

73,
John
KD7ZYR

-----Original Message-----
From: elecraft-bounces+bonkj=johnbonk.net at mailman.qth.net
[mailto:elecraft-bounces+bonkj=johnbonk.net at mailman.qth.net] On Behalf Of
John Bonk
Sent: Monday, May 23, 2005 1:28 PM
To: elecraft at mailman.qth.net
Subject: RE: [Elecraft] Cannot hear internal ref. signal

Update:

At lunch I used the signal tracing handout and could not inject a signal
into TP#1 and hear any change at all.  I verified all the parts and
installation direction of all the items in the handout as well as reflowing
the solder points with no change.  One item of note is that the static hiss
does change at all when changing freqs by moving the knob or by changing
bands with the BAND +/- buttons.  

74,
John
KD7ZYR

-----Original Message-----
From: elecraft-bounces+bonkj=johnbonk.net at mailman.qth.net
[mailto:elecraft-bounces+bonkj=johnbonk.net at mailman.qth.net] On Behalf Of
John Bonk
Sent: Monday, May 23, 2005 9:19 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] Cannot hear internal ref. signal

Hello all,

I am working on the 2nd of my two K2 kits while my first is waiting for some
flux-off and have reached the IF Amplifier Alignment and cannot hear the
internal signal.  All resistance checks and alignment up to the point has
been without issue.  I checked and rechecked the board for solder problems
last night without any luck.  Any suggestions on where I might focus my
search?

73,
John
KD7ZYR  

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