[Elecraft] K3 shuts down

[Glenn Thorne]

Problem solved.  It was the power cable.  Noticeable number of strands of
the #12 wire were broken at the ring terminal end at the PS.  14.3 volts
dropped to 11.5 on keydown at 100 W.  Replaced cable with #10 and now have
13.8 V on keydown.

Thanks for everyone's response.

73, Glenn - KD0Q

On Tue, Aug 27, 2024 at 9:30 PM Glenn Thorne <kd0q.glenn at gmail.com> wrote:

> Just tonight my K3 with KPA3 running 100 watts shuts down during digital
> transmissions.  It appears that it happens after the PA temp is 47 C.
> Maybe the first time it hits 48 C?
>
> I checked the KPA3 FN1 - 4 settings and it appears that the fans work.
>
> At what PA temps should the fans come on?  Increased speed?
>
> Any ideas where to start troubleshooting will be appreciated.
>
> Glenn - KD0Q
>