Tom, I just had the same problem here and it turned out to be the Digital I/O board (the one with the RS232 & ACC connectors). If you follow the troubleshooting section in the K3 manual, it has you disconnect everything but power to the K3, then remove the Digital I/O board, the KIO3 board and then the KPA3 board while checking after each removal to see if it powers off normally.
I got lucky and found my problem as soon as I removed the Digital I/O board. I had a very early version of that board and fried it while doing the TX Gain Calibration test and popping a fuse on my power cable with the RS232 port still hooked up to my laptop. Dale pointed me to the REMIOUPGD option ($20 USD) on the mods page of the Elecraft site. I received the board in a couple of days and all is back to normal (whatever that is ;-) ). Good luck and hope this helps. 73, Dave W8FGU On 8/6/2012 11:45 AM, [email protected] wrote: > My K3/100 which is set up with the P3 and then goes to microKeyer II > will turn back on within seconds of pushing the Power switch. I looked > at the nabble posts and tried downloading latest firmware....I was only > off one, 4.48; now 04.51 is installed. > > I also disconnected the mK II and removed both the RS232 and ACC plugs > from the back of the K3. I also removed the power cable from the P3. > > The rig still cycles back to on within one or two seconds of pushing the > Power button to Off. There has been no changes to the rig setup since > last March when I set up the P3...no local t-storms, etc. > > Any ideas? > > 73 > Tom > CX7TT > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
