Steve, Maybe a long shot, but try removing U6 (Control Board) from its socket and plugging it back in again - with power off of course while you do this :-)
My K2 "froze" in similar fashion about 2 years after I had built it, and the cause was poor contact between one or more of U6's pins and the IC's socket due probably to "corrosion". The type of socket used does not provide a "gas tight" connection, and pulling and reseating the IC should clean the socket. Even unused sockets of this type can sometimes cause "problems". 73, Geoff LX2AO (aka GM4ESD) Steve KW4H wrote on December 22, 2011 at 4:24 AM: Yup, the firmware comes up -- I get the "elecraft" signal in the display and then the usual 40 meter freq. After that, the display is frozen with the frequency display and the buttons do nada. My best guess is that it's probably something simple like a missed solder connection (it happens to all of us!), but so far I've not found anything, and all the boards passed their resistance checks. Steve, KW4H ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
