It might be the KXUSB. Try different a USB hub on the computer if you have a choice, or another computer if available.
Sometimes windows updates change the COM port number, try the steps in Kx3 utility help for finding the right COM port. It might have been a while since you last used the utility. 73 de Dick, K6KR > On Dec 9, 2018, at 18:52, Dave Sublette <[email protected]> wrote: > > It is not looking good, folks. The RS232 adapter which drives the KX3 is > not flashing any more as it usually does. The KX3 Utility returns "KX3 not > responding" when I test the link. All cables are properly connected. It's > been working perfectly until earlier this evening. > > I think it is due for a trip back to Elecraft. I will call them tomorrow. > > Thanks for the help. I did find the Help column and the troubleshooting , > etc.... > > I had already done all of those steps and got nothing but the "not > responding" error. > > I'll let everyone know what happens. > > 73, > > Dave, K4TO > > On Sun, Dec 9, 2018 at 8:32 PM Walter Underwood <[email protected]> > wrote: > >> I’m sure you have checked, but I would open it up and make sure the ribbon >> cables are fully seated. Then I’d check the cables to the PC. Probably >> restart the PC, too. >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> >>> On Dec 9, 2018, at 4:58 PM, Dave Sublette <[email protected]> wrote: >>> >>> When I bring up the KX3 utility, there is no tab labeled Help or >>> Troubleshooting or MCU. I now get a "KX3 is not responding" message. >>> >>> Dave >>> >>>> On Sun, Dec 9, 2018 at 6:57 PM <[email protected]> wrote: >>>> >>>> I'd recommend the steps described in KX3 Utility Help, Troubleshooting, >> MCU >>>> Boot Loader. >>>> >>>> 73 & Good Luck! >>>> Dick, K6KR >>>> >>>> >>>> -----Original Message----- >>>> From: [email protected] < >> [email protected]> >>>> On >>>> Behalf Of Dave Sublette >>>> Sent: Sunday, December 9, 2018 15:04 >>>> To: Elecraft Discussion List <[email protected]> >>>> Subject: [Elecraft] KX3 has died >>>> >>>> I believe my KX3 has died in the past 30 minutes. It was operating with >>>> N1MM prior to that. >>>> >>>> I went to the support page at Elecraft.com. >>>> >>>> I downloaded the latest KX3 Utility. >>>> >>>> I started the Firmware upgrade process. >>>> >>>> Initially the message said my KX3 was missing some files and to download >>>> the >>>> latest firmware. I did that without any trouble. >>>> >>>> When I went to transfer the firmware to the KX3, I got a message that >> said >>>> "KX3 failed to enter firmware load mode" (or something like that). >> Further >>>> instructions said to remove power, power back up and try again. >>>> >>>> Same result. >>>> >>>> Tried the "force firmware upgrade" by holding the Band- and ATU Tune >>>> buttons down for 10 seconds. The firmware load failed again -- same >> error >>>> "KX3 failed to enter Firmware load mode". >>>> >>>> Meanwhile the front panel of the KX3 showed " MCU LD" during the entire >>>> time. >>>> >>>> The com port tested good, using the KX3 utility. >>>> >>>> I don't know what else to try. >>>> >>>> Looks like the next step is to contact Elecraft support. >>>> >>>> Any thoughts? >>>> >>>> Dave, K4TO >>>> >>>> ps -- I think the KX3 is just pouting because I have ordered a new K3s >> :-) >>>> ______________________________________________________________ >>>> 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 >>>> Message >>>> delivered to [email protected] >>>> >>>> >>> ______________________________________________________________ >>> 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 >>> Message delivered to [email protected] >> >> ______________________________________________________________ >> 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 >> Message delivered to [email protected] > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
