KX2 sluggish/intermittent VFO display
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KX2 sluggish/intermittent VFO display
 
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A colleague's KX2 has had the following symptom several times after approx. 2
hours of portable operation at ambient temperatures of approx. 20-25 °C and locations in the shade or in the sun: Sluggish and intermittent VFO display when dialling to a new frequency. The selected frequency then appeared correctly after approx. 0.5-1.5 seconds. Has anyone noticed the same symptom and if so, what had to be done to fix it? Any help would be appreciated? 73 tks, Heinz HB9BCB Edit 19.04.2020: The following question was asked in an earlier post and an answer would still be highly appreciated: Is the encoder soldered to the main circuit board? Or does it have its own mini "daughter board" (like the K3 and KX3 VFO A encoder) which, in turn, plugs into the main circuit board (making the encoder upgrade-able / field replaceable)? -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ 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 Message delivered to lists+1215531472858-365791@n2.nabble.com |
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I have seen the same on my KX2, while dialing it seems to freeze at
times for a second or so at a time. Even after being on only a few minutes. Kind of annoying but not too worrying to me. At least for now. Serial # 01927 73 de Tom KB2SMS On 4/18/20 10:44 AM, Heinz Baertschi wrote: > A colleague's KX2 has had the following symptom several times after approx. 2 > hours of portable operation at ambient temperatures of approx. 20-25 °C and > locations in the shade or in the sun: > > Sluggish and intermittent VFO display when dialling to a new frequency. The > selected frequency then appeared correctly after approx. 0.5-1.5 seconds. > > Has anyone noticed the same symptom and if so, what had to be done to fix > it? > > Any help would be appreciated? > > 73 tks, > Heinz HB9BCB Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: KX2 sluggish/intermittent VFO display
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Thanks Tom, interesting to know. *When troubleshooting it would still be of great help to know how the KX2 encoder is connected to the main bord - plugged in or soldered?* 73, Heinz HB9BCB Tommy wrote > I have seen the same on my KX2, while dialing it seems to freeze at > times for a second or so at a time. Even after being on only a few > minutes. Kind of annoying but not too worrying to me. At least for now. > Serial # 01927 > > 73 de Tom KB2SMS > > > On 4/18/20 10:44 AM, Heinz Baertschi wrote: >> A colleague's KX2 has had the following symptom several times after >> approx. 2 >> hours of portable operation at ambient temperatures of approx. 20-25 °C >> and >> locations in the shade or in the sun: >> >> Sluggish and intermittent VFO display when dialling to a new frequency. >> The >> selected frequency then appeared correctly after approx. 0.5-1.5 seconds. >> >> Has anyone noticed the same symptom and if so, what had to be done to fix >> it? >> >> Any help would be appreciated? >> >> 73 tks, >> Heinz HB9BCB > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft@.qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > lists+1215531472858-365791@.nabble -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: KX2 sluggish/intermittent VFO display
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All encoders in the KX2 are soldered you the control panel board.
73, Lyle KK7P Sent from my iPhone > On Apr 19, 2020, at 3:57 AM, Heinz Baertschi <[hidden email]> wrote: > > > Thanks Tom, interesting to know. > > *When troubleshooting it would still be of great help to know how the KX2 > encoder is connected to the main bord - plugged in or soldered?* > > 73, > Heinz HB9BCB > > > > Tommy wrote >> I have seen the same on my KX2, while dialing it seems to freeze at >> times for a second or so at a time. Even after being on only a few >> minutes. Kind of annoying but not too worrying to me. At least for now. >> Serial # 01927 >> >> 73 de Tom KB2SMS >> >> >>> On 4/18/20 10:44 AM, Heinz Baertschi wrote: >>> A colleague's KX2 has had the following symptom several times after >>> approx. 2 >>> hours of portable operation at ambient temperatures of approx. 20-25 °C >>> and >>> locations in the shade or in the sun: >>> >>> Sluggish and intermittent VFO display when dialling to a new frequency. >>> The >>> selected frequency then appeared correctly after approx. 0.5-1.5 seconds. >>> >>> Has anyone noticed the same symptom and if so, what had to be done to fix >>> it? >>> >>> Any help would be appreciated? >>> >>> 73 tks, >>> Heinz HB9BCB >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto: > >> Elecraft@.qth > >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to > >> lists+1215531472858-365791@.nabble > > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Hi,
This doesn't sound like an encoder problem to me. Encoders have no memory, so if the radio eventually responds to the encoder pulses and displays the correct frequency after a delay, that delay must have occurred in the microcontroller itself or possibly in the display module if it is an "intelligent" one. To me it sounds if the KX2 microcontroller occasionally gets overloaded and sluggish in responding to inputs. Do you have anything connected to any ports, such as serial port, AUX port, etc.? Pardon my ignorance on the KX2 here but most Elecraft radios, even the smaller ones, have ports like these. I have seen in the past (maybe not with an Elecraft product) radio brought to its knees from hyperactivity on a serial port. Disconnect everything that is not essential to local (sitting in front of) radio operation and see if the problem goes away. AB2TC - Knut Lyle Johnson wrote > All encoders in the KX2 are soldered you the control panel board. > > 73, > > Lyle KK7P > > Sent from my iPhone > >> On Apr 19, 2020, at 3:57 AM, Heinz Baertschi < > heinz.baertschi@ > > wrote: >> >> >> Thanks Tom, interesting to know. >> >> *When troubleshooting it would still be of great help to know how the KX2 >> encoder is connected to the main bord - plugged in or soldered?* >> >> 73, >> Heinz HB9BCB >> >> >> >> Tommy wrote >>> I have seen the same on my KX2, while dialing it seems to freeze at >>> times for a second or so at a time. Even after being on only a few >>> minutes. Kind of annoying but not too worrying to me. At least for now. >>> Serial # 01927 >>> >>> 73 de Tom KB2SMS >>> >>> >>>> On 4/18/20 10:44 AM, Heinz Baertschi wrote: > <snip> -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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