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

[Phil Wheeler]

Ah, yes: "Lent the rig for Field Day use". I did 
that only when I could be there and could watch 
such things closely.

My only loss was a sledgehammer I loaned. It came 
back "repaired" with duct tape, and totally 
useless. I've kept it that way and a reminder 
about the risk of loaning things for use at Field 
Day :-)

73, Phil W7OX

On 9/4/16 9:12 AM, George Thornton 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