Lost Power out on K2

[Rich McCabe]

The first K2 I built has been working great for over a year. All of a sudden the best it would do is about 7/10 watt below 10mhz and nothing above.

The 100 watt section has been removed and get the same results. Also getting HI CUR.

My first guess would be final related. The nuts on the case are tight so disipation should not have been an issue.

Any direction on a starting point? Anything in the menus that could be out of whack besides the current limit? This radio has been used for a LOT of software testing so it is possible that we could have changed ANY menu setting by mistake.

73,

Rich
KD0ZV
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[Rich McCabe]

Hmmmm. Working now. Not sure why !

Everything looks good. Might be wise to get a new set of thermal pads for
the finals as they are looking a little frazzled after a few bottom cover
removals. Guess we will just have to keep an eye on it.

Thanks,

Rich
kd0zv
----- Original Message -----
From: "Rich McCabe" <[hidden email]>
To: <[hidden email]>
Sent: Friday, March 17, 2006 10:41 AM
Subject: [Elecraft] Lost Power out on K2


The first K2 I built has been working great for over a year. All of a sudden
the best it would do is about 7/10 watt below 10mhz and nothing above.

The 100 watt section has been removed and get the same results. Also getting
HI CUR.

My first guess would be final related. The nuts on the case are tight so
disipation should not have been an issue.

Any direction on a starting point? Anything in the menus that could be out
of whack besides the current limit? This radio has been used for a LOT of
software testing so it is possible that we could have changed ANY menu
setting by mistake.

73,

Rich
KD0ZV
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[Ron D'Eau Claire-2]

Rich KD0ZV wrote:

Hmmmm. Working now. Not sure why !

Everything looks good. Might be wise to get a new set of thermal pads for
the finals as they are looking a little frazzled after a few bottom cover
removals. Guess we will just have to keep an eye on it.

--------------------------------

Next time you have it apart, do a very careful scan for unsoldered leads.
Several months to a year or so is a very common range for the problems
caused by a missed solder joint to start causing trouble as the oxidation
starts to build up around the lead, causing it to become intermittent.

Ron AC7AC

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