[Elecraft] KX3 Shutdown

[John Nogatch]

On Tue, Oct 7, 2014 at 6:40 PM, Barry LaZar <k3ndm at comcast.net> wrote:
> ... has begun to shut down unexpectedly while running CW or SSB. The
> power supply is an Astron 35 Amp linear that appears to be rock solid....

I had a similar problem with my K3. Suspecting a power supply problem,
and after reading:

http://www.repeater-builder.com/astron/astron-intro-stuff.html

I found that the RS-35M pass transistor mounting screws were slightly
loose, i.e. I could easily tighten them perhaps 1/8 turn.
After adding "split-ring" lockwashers to the pass transistor mounting
screws, the problem has not recurred.

Also, I have added fans to the backs of the heatsinks. The RS-35M no
longer gets hot, like it used to.

-John AC6SL