[Elecraft] K2: KPA100 Trouble

[Jim KO5V]

Hi again Don,

I just finished that. I found the setting to be 143C. something must be bad; possibly R6 or the temp sensor? 

So, I set it to the ambient temp (in C), and checked the current limit setting - it was correct at 3.50A. I toggled the power, and it's now working. Power out is OK, and no error messages. I just talked to a guy on OR and he said it sounds good, but that will be all until I understand what is happening.

It was cold this morning, so maybe something was stressed as it warmed up (?).

I don't have a warm and fuzzy felling about this. That's a big, sudden error in calibration.

Thank you. 73, Jim KO5V

-----Original Message-----
>From: Don Wilhelm <donwilh at embarqmail.com>
>Sent: Nov 12, 2019 12:03 PM
>To: Jim KO5V <jrf1959 at earthlink.net>, elecraft list <elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] K2: KPA100 Trouble
>
>Jim,
>
>Did you check to see where CAL TPA is set in the menu?  Set it as 
>indicated in the KPA100 manual.
>
>73,
>Don W3FPR
>
>On 11/12/2019 12:39 PM, Jim KO5V wrote:
>> Good Morning,
>> 
>> My K2 Twins have been working great for the past 11 months. I usually run about 90-95W.
>> 
>> This morning when I turned on the rig the room was probably about 55F. I immediately worked a loud DX station. The second QSO a few minutes later was going just fine, but after about a minute, I received a brief "Hi Refl" error, followed by "Hot PA" - which wouldn't go away until I pressed a button (menu, I think). There is no power output. The fan runs constantly on "Hi", and will not shut off. Resetting the power by turning off the K2 and the power supply has no effect.