[Elecraft] KX1 power on problem

[Kurt Pawlikowski]

Mike,

    The first thing that usually comes up is the "standard" answer of 
making sure all the solder joints are solid. Sometimes, just reheating 
them will make the difference. It's possible that you do have some sort 
of component failure, but I wouldn't expect it to be intermittent. That 
is, most of the time something fails, it's dead. If you are unfortunate 
enough to have a part that is static damaged, this sort of behavior is 
possible (referring to the memory loss). I'm not sure I'd be thinking 
filter cap (particularly if the noise is 60 cycle) since you get the 
same thing on battery. Anyway, that's just a few quick thoughts. Hope it 
helps. Let us know what you find.

    Regards,

    kurtt

    Kurt Pawlikowski, AKA WB9FMC
    The Pinrod Corporation
    kurtt at pinrod.com
    (773) 284-9500
    http://pinrod.com

Mike Scott wrote:
> My 3-band KX1 does not always come fully on when I hit the power switch.
>
> I am plugged into external 14 VDC power. I also have the same symptoms on
> battery power.
>
> Symptoms are as follows:
>
> Log lamp always works
>
> Sometimes power comes on normally with the frequency shown in the display
> and band noise and signals in the headphones.
>
> Sometimes when I turn it on I hear noise, but not band noise and the display
> remains dark. The noise right now is accompanied with a start up buzz that
> fades to white noise with a dark display.
>
> After a lot of power cycling when I am trouble shooting the KX1 starts up
> every time and the start up buzz goes away and the display works.
>
> One more symptom that is odd, I just used recall memory to tune to 7.040
> MHz. I then cycled the power. The radio came up on 6.0691 MHz, it forgot the
> last frequency used. 
>
> No matter what the prior frequency is the radio comes up at the following
> frequencies:
> 40M -  6.0691
> 30M - 10.1068
> 20M - 14.0054
>
> The buzzing noise makes me think an electrolytic is going somewhere.
>
> I am not sure where to start, anyone have a pointer?
>
> Mike Scott - AE6WA
> Tarzana, CA (DM04 / near LA)
> QRP-ARCI #12326/ KX1  #1311/ Swan 350C
>
>
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