[Elecraft] K2 build problem.

Wed Nov 26 21:07:01 2003

Hi guys, hope all is well and everyone ready for Thanksgiving. Looking
forward to the long weekend and building options for the new K2.

The base unit is now complete. The build went without a hitch except for
below mentioned problem where I lost receive on the last assembly section
with the Q1/ RP1 overheating issue.

Turned out it was a bad cap. C108 (.01) was shorted and was taking taking
down 8T. As soon as I popped a new cap inline it took right off. Thanks to
all for their comments and Gary for his help.

Back to solderin'

73,

Rich
kd0zv
K2 3839

----- Original Message ----- 
From: "Phil Wheeler" <[email protected]>
To: "Rich McCabe" <[email protected]>
Cc: <[email protected]>
Sent: Monday, November 24, 2003 10:01 PM
Subject: Re: [Elecraft] K2 build problem.

> Look for a short on the RF board which can result in the sort of thing
> you mention.  If you are doing R checks with the Ctrl Brd removed, these
> would not show up.  Do some measurements with the Ctrl Brd plugged into
> the RF board.
>
> 73, Phil
>
> Rich McCabe wrote:
>
> >I am just about finished with the K2 with the exception of options. I
just
> >got the covers on and went to test and noticed I have lost my audio and
the
> >S meter is on the highest bar. All tuning seems to function etc. Last
night
> >in previous alignment step I could receive fine on 40.
> >
> >It is possible I had a small piece of lead near J1 on the control board.
I
> >shook radio and thought I saw something fall out but not sure.
> >
> >It seems RP1 and Q1 are extremely warm. I have not left radio on for more
> >than 30 seconds.
> >I went back to the resistance checks on the control board and everything
is
> >in spec.
> >
> >Any suggestions?
> >Thanks and 73,
> >Rich
> >kd0zv
> >
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