Bob,
You have a bad solder connection somewhere.
I would look first at the Front Panel board.
73,
Don W3FPR
Bob VanFossen wrote:
I have just finished my second K1. It seems to have an intermittent and
apparently temperature sensitive problem.
Symptoms are: on power up, the yellow LED turns on and stays there. If the
room temp is fairly low, heating the back of the front panel (and
consequentially the RF board) causes it to resume normal power up, and then
everything is normal. Cooling it down does NOT cause a failure.
Normal power up sequence is a quick blink of the Yellow LED, followed by a
longer blink of the same LED then the RED Green then freq display. On
Failure, there is NO blink, just steady yellow.
Can anyone lead me thru the power up diagnostic and just what is happening
that SHOULD cause the Yellow led to turn off initially? I don't even know
where in the circuitry start!
When this K1 completes it's power up, it works flawlessly! It only fails at
power up. It also seems to work OK if VERY cold, or at normal room temp.
HELP!!!
Bob VanFossen, K4DJG
For Those Who Understand, No Explanation Is Necessary.
For Those Who Do Not Understand, No Explanation Is Possible.
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - http://www.avg.com
Version: 8.0.176 / Virus Database: 270.10.0/1866 - Release Date: 12/27/2008 8:49 PM
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
