[Elecraft] My K2/100 keeps resetting at high power

[Hisashi T Fujinaka]

I think I see HiRefl even though at lower power I saw lower than 2:1
SWR. I do have an SWR meter external to the K2. I'll look to see what it
tells me.

Thanks!

On Mon, 2 Apr 2012, Don Wilhelm wrote:

> Hisashi,
>
> If by "reset" you mean the power turns off, you are most likely seeing the 
> internal resettable fuse trip.
> Normally you would see a HiCur message too.
> Usual causes for that behavior are either that the KPA100 wattmeter diodes 
> have been damaged or you have a damaged PA transistor in the base K2.
>
> Check the actual output power --
> Connect an external wattmeter between the KPA100 and a dummy load then set 
> the K2 power knob to about 30 watts.  set to CW and hold the key down long 
> enough to read the external wattmeter.  If it shows full power output 
> (greater than 100 watts), you have a problem with the wattmeter in the KPA100 
> - most likely bad diodes at D16 and D17.
>
> 73,
> Don W3FPR
>
>
> On 4/2/2012 11:37 AM, Hisashi T Fujinaka wrote:
>> OK, it's S/N 4355 with all the latest mods and it used to just reset
>> when I got on 15M phone. Now it's resetting on 30M CW while I'm trying
>> to work DX so it's bugging me. :)
>> 
>> Besides the standard checking for 10-year-old cold solder joints, is
>> there anything else to check right away?
>> 
>

-- 
Hisashi T Fujinaka - htodd at twofifty.com
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte