[Elecraft] KXB3080 HELP KX1 will not turn on

[Chuck Gehring]

Ron,
Thanks, That is exactly what I did.  I put the screw in there to hold the
nylon shoulder in place while I worked on everything.  I removed the screw
and power came on.  Its nice to know that I am in good company.  BTW I
noticed that if I had gone to the KX1 Manual for trouble shooting that the
manual would have told me what I did and could have spared myself the public
humiliation.

Thanks again
73 KI4DGH

Chuck Gehring

-----Original Message-----
From: Ron D'Eau Claire [mailto:rondec at easystreet.com]
Sent: Saturday, March 25, 2006 7:05 PM
To: 'Chuck Gehring'; elecraft at mailman.qth.net
Subject: RE: [Elecraft] KXB3080 HELP KX1 will not turn on


Chuck, KI4DGH asked:

I have just finished Part I Modify the KX1 PCB section and now I am
attempting the steps for Alignment and Test -Part II for receiver alignment
to confirm that the modifications have been correctly installed.  Obviously
I messed something up.  Nothing happens during power up.  I get power up to
the power switch but when I turn on the switch nothing happens, no LED no
relays clicking nothing.  I had a KXB30 installed and completely removed the
KXB30 board and all wires.  I would really appreciate some help
troubleshooting this problem.

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

Do you have a metal screw holding the final amplifier mounting hardware
together, Chuck?

If you put a metal screw in the final amp without the heat sink, you're
shorting the B+ to ground!

Right off hand that's all I can think of at this point. All you've done is
remove the KXB30 module and reconfigure the receiver input circuit. That
doesn't involve any direct connections to the B+ circuitry.

If it's not the 'screw in the final amplifier' bit (which probably half of
the KX1 owners have done with the unit open, including me!) I'd look very
closely for a solder bridge somewhere around the components you just
replaced or the transformer you added.

Ron AC7AC