[Elecraft] K2 w/KPA100 power resets after approximately 2 hrs of turn-on time

[Don Wilhelm]

Jim,

"the issue happens even if I haven't been transmitting"
Does that mean you can just turn it on, leave it in receive mode, and it 
turns off?
If so, you have a problem with the power circuits in the base K2 or the 
components that feed the base K2 from the 12 volt power in the KPA100.
First and most likely, check the crimp pins in the housing that plugs 
into K3 RF board P3 (AUX 12V).  If the crimp pins are 'mashed', they 
will not make good connection - get new crimp pins and insert them 
properly into the housing.
If those are OK, check the red and black wires - if they have ever been 
pinched between the KPA100 shield and the K2 side panel, they may have 
broken wires, replace the wires (use stranded wire).
Check the soldering of KPA100 D9.
In the base K2, check the soldering of F1 and the power switch.  You 
might consider replacing F1.

73,
Don W3FPR

On 11/12/2015 8:27 PM, wa4ywm wrote:
> I originally posted this in July and I still have the problem. The issue is
> as described below past the dashed line. Note that the issue happens even if
> I haven't been transmitting.
>
>