[Elecraft] KAT1 - stumped

Sun Sep 29 00:48:01 2002

Mike     The same thing happened to me.  I had failed to cut off the leads
on the resonator, Z1, as instructed in the manual.  These leads are not much
longer than relay leads, but they are long enough to contact one of the xtal
cans on the filter board .  This was visible by sighting between the two
boards with the top cover removed.  After cliping the leads the tuner worked
correctly.     73     Rick   K7MW
----- Original Message -----
From: "Mike Zak" <[email protected]>
To: <[email protected]>
Sent: Saturday, September 28, 2002 11:44 AM
Subject: [Elecraft] KAT1 - stumped

Hints appreciated:

I have a complete K1-4 that works GREAT and I have been having a load of fun
with it.  It has RF Board Rev E and Filter Board Rev B.  K1 MPU rev 109.

I decided to go ahead and construct the KAT1, which is on PCB Rev. C.  As
many of you know, there aren't a lot of parts on it and it goes together
quite easily.

I went ahead and mounted it on the filter board, disconnected R36, and have
been unable to power it up.  When I scroll to the ATU portion of the menu,
and try to EDIT, I get the dreaded three dashes  "- - -".

Just went through the troubleshooting suggestions in the manual, which are
kinda sparse.  Reseated the KAT1 MPU, went around the socket for U1 and
reheated all the pins on the bottom of the board.  Verified that K1 firmware
release is 109, looked for solder bridges.  I have enough experience with
these designs so far (a Norcal 40a and the K1) to know that they usually
work when you bring them up unless you've done something pretty dumb - any
suggestions as to what I could have done (or not done) to fail to get the K1
controller to register the presence of the KAT1?

Mike - W1MU

_______________________________________________
Elecraft mailing list: [email protected]
You must be a list member to post to the list.
Postings must be plain text (no HTML or attachments).
See: http://mailman.qth.net/mailman/listinfo/elecraft
Elecraft Web Page: http://www.elecraft.com