Dick I removed every other option in the radio, including the RS-232 interface board, the PA and the sub RX. The radio still did not shut off from the front panel switch.
Thanks, John K1JD -------------------------------------------------- From: "Dick Dievendorff" <die...@comcast.net> Sent: Thursday, April 29, 2010 8:22 PM To: "'JohnK1JD'" <johnk...@cox.net>; "'Elecraft Reflector'" <elecraft@mailman.qth.net> Subject: -- SPAM -- RE: [Elecraft] K3 not turning off > I saw one case something like this when something was connected to one of > the back panel connections that provided enough voltage to keep the MCU > alive (I think it's a 3.3V device) > > If you remove all the connectors from the K3 back panel (except the > Anderson > power pole +12V supply, of course), does the radio shut down reliably? > > Dick, K6KR > > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of JohnK1JD > Sent: Thursday, April 29, 2010 5:02 PM > To: Elecraft Reflector > Subject: Re: [Elecraft] K3 not turning off > > Bill > I suspect that Glenn's K3 turns on OK from the front panel switch, like > mine. > > Glenn > Much of May 2009 was spent troubleshooting this exact issue with S/N 071: > the inability to power down the K3 from the front panel. Power on is fine. > I > performed numerous modifications (including the 12v sense, of course), > diagnostics/measurements, replacement of a surface mount component, and > replaced the FP board twice, all as directed but without resolution. > However, the K3 shuts off using the "PS0;" command from the utility > program. > Given that workaround, my decision was to postpone sending it back for > repair to see if a solution appeared over time - maybe something I could > do > myself. Our problems may not be identical, but if you're interested please > contact me off reflector for the extensive troubleshooting email thread. > > Elecraft support during the troubleshooting phase was excellent, as > always, > but some issues defy remote diagnoses. If I were willing to part with the > beloved K3 for factory repair, the problem would have been resolved a long > time ago! > > 73, > John K1JD > > > > > Date: Wed, 28 Apr 2010 04:55:17 -0700 (PDT) > From: Bill W4ZV <btipp...@alum.mit.edu> > Subject: Re: [Elecraft] K3 not turning off > To: elecraft@mailman.qth.net > Message-ID: <1272455717487-4974007.p...@n2.nabble.com> > Content-Type: text/plain; charset=us-ascii > > > > Glenn VK4FZ wrote: >> >> My K3 (S/N 544) is no longer turning off properly....the 12v sense mod is >> done, any ideas for further investigation???? >> > > I'd next try the remote Power Off command (PS0) via the K3 Utility. If > that > works and the power switch does not, then you might have a defective > switch. > > 73, Bill > ______________________________________________________________ > 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 > > ______________________________________________________________ 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
