[Elecraft] Mysterious intermittent failure possibly related to power supply?

[Rose]

George,

I shudda been more clear and asked if the nuts on the filter
cap studs that hold the circuit board in place atop the caps
inside your Astron are tight.  This is the circuit board with the
output voltage adjustment pot on the bottom that's difficult to
reach> (;-)

73

K0PP

On Sun, Sep 4, 2016 at 10:12 AM, George Thornton <
gthornton at thorntonmostullaw.com> wrote:

> The long history was that a few years ago I lent the rig for Field Day use
> and something unknown went wrong.  There was a nut that came loose inside
> the rig and there might have been a short circuit somewhere.
>
> The rig was sent back to Elecraft for diagnosis and repair and it was
> fully worked over including all the mods including gold pins.  It came back
> fine and I did not open the case between then and this year's Field Day
> power transmit failure.
>
> After Field Day I re-flashed the firmware and recalibrated transmit and it
> worked fine again although it did not get heavy use as my main antenna was
> down for servicing.
>
> The synthesizers were upgraded about two weeks ago without a problem.
>
>
>
> From: Ken G Kopp [mailto:kengkopp at gmail.com]
> Sent: Sunday, September 4, 2016 8:42 AM
> To: George Thornton <gthornton at thorntonmostullaw.com>;
> elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Mysterious intermittent failure possibly related
> to power supply?
>
>
> George,
>
> Does your K3 have the gold PA pin upgrade?
>
> Are the nuts on the filter cap studs that mount the circuit board tight?
>
> 73
>
> K0PP
>
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