(KX3) OMG My brand new KX3 has a nasty little problem!

[bruce whitney]

The DC cable/connection is flaky.. any movement of the cord or twisting of the connector kills the power and of course when turning it back on again the radio comes back in default - many KHz away and in a different mode than the QSO - I wanted to throw it through the window! I will call the boys in Aptos tomorrow - anybody else have this problem?
Bruce W8RA

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[Dick Dievendorff]

I had that problem when I was using the wrong sized plug on the DC power.  I
think I was using a 2.5mm coaxial plug instead of the 2.1mm plug that I
should have used. It worked a lot better when I got the right sized DC power
plug.

Dick, K6KR


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of bruce whitney
Sent: Sunday, September 16, 2012 9:20 AM
To: [hidden email]
Subject: [Elecraft] (KX3) OMG My brand new KX3 has a nasty little problem!

The DC cable/connection is flaky.. any movement of the cord or twisting of
the connector kills the power and of course when turning it back on again
the radio comes back in default - many KHz away and in a different mode than
the QSO - I wanted to throw it through the window! I will call the boys in
Aptos tomorrow - anybody else have this problem?
Bruce W8RA

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[Lou Voerman W2ROW]

Bruce,

I had the same symptoms. In my case it was caused by a broken solder connection where the power jack  attaches to the CP board. I removed the CP board, heated the connection and added solder to it. The problem is solved.

The power jack is a surface mount device and as such had very little solder where it is connected to the board. If I were to build another KX3 kit I would resolder the power jack connections before assembly as a routine precaution. This appears to be a weak point in the KX3 construction.

Lou   W2ROW

bruce whitney wrote

The DC cable/connection is flaky.. any movement of the cord or twisting of the connector kills the power and of course when turning it back on again the radio comes back in default - many KHz away and in a different mode than the QSO - I wanted to throw it through the window! I will call the boys in Aptos tomorrow - anybody else have this problem?
Bruce W8RA

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