Chris and All, I had a power on--power off problem some time back. I think several others had a similar issue. My problem was traced to the I/O board. I believe this has been fixed, and later units don't have the problem. Not sure what your number is though.
I suggest you contact Gary or Rene at Elecraft. They are pretty sharp, and I bet they can get you fixed up quickly. Dave W7AQK ----- Original Message ----- From: "Chris Kantarjiev" <[email protected]> To: <[email protected]> Sent: Monday, March 23, 2009 8:27 PM Subject: [Elecraft] K2 resetting itself >I was happily monitoring 14.058 this afternoon when my K2 turned itself >off. > I cycled the power button and it came on enough to say ELECrAFT and to > hear a little audio, and then shut down. Then cycling the switch didn't > do anything. Or would do a little. > > I figured it was causing F1 to reset. Put it on the bench and sure enough, > it's drawing about 5.6A ... the manual is not terribly helpful about > diagnosing. > > I opened it up and started removing boards. Can't really find anything. > It would have been too easy if something in the battery charging circuitry > had shorted ... With the switch "ON", +12V shows 105 ohms to ground. > That can't be good. > > I'm not really sure how to diagnose this. The PA transistors seem > like a place to start: the emitters are grounded, when the switch > is OFF, the collectors have about 100 ohms to ground (can that be > right?) , the base about 134 ohms. > > Suggestions would be quite welcome. > > 73 de chris K6DBG > ______________________________________________________________ > 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
