[Elecraft] KX1 power on problem

[Bob Waddell]

Mike,

In addition to checking soldering joints, double check carefully components on the board with the manual.  Yeah, I know, it's a pain but the only thing you can do.  Also check the battery plug on the board.  I had a problem with the type of wire they chose, as it would break easily if you took it in and out of the case too much.

Bob
N4BGR


> From: mike at paxsen.com
> To: Elecraft at mailman.qth.net
> Date: Fri, 5 Oct 2007 13:31:09 -0700
> CC:
> Subject: [Elecraft] KX1 power on problem
>
> 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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