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.gl...@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 > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
