K2 Kit Issue with tuning
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Hi all,
I am very happy with my K2 kit. I am taking my time and being very careful NOT to have any solder bridges. So I was disappointed & depressed when I discovered the tuning knob does NOT advance or reduce frequency, it just stays on the beginning band frequency when the knob is spun. I also noticed the menu button, when pressed multiple times, does NOT advance to the next menu item, going in either direction. Related issue? So, if anyone has suggestions on where to look or start looking, I would very much appreciate any ideas. All resistances checked out ok, too. Many thanks! Don, KE0PVQ p.s. I want to learn about vanity call signs, why would I want one? What do they represent? How do you pick one? Yep, I’m a new-bee, but an old fart at 75! Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 ______________________________________________________________ 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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Don,
The most likely cause of that behavior is because the encoder board is making contact with the Control Board. Flush trim (diagonal cutters will not suffice) the leads on the encoder board and also the area of the Control Board which possibly could contact it. If you do not have flush cutters, you can find inexpensive ones in the tool section of your local Home Depot store. Look for Lufkin or Xcelite or Cooper (all the same company) "shear" cutters - they are inexpensive and will do a good job. As added insurance, you can place a piece of card stock (a business card) or better yet Fish Paper or a flat piece of thin plastic like that used for the shrink wrap on purchased small items between the encoder board and the back of the control board. 73, Don W3FPR On 7/12/2018 3:22 PM, Don Schroder wrote: > Hi all, > > I am very happy with my K2 kit. I am taking my time and being very careful NOT to have any solder bridges. So I was disappointed & depressed when I discovered the tuning knob does NOT advance or reduce frequency, it just stays on the beginning band frequency when the knob is spun. > > I also noticed the menu button, when pressed multiple times, does NOT advance to the next menu item, going in either direction. Related issue? > > So, if anyone has suggestions on where to look or start looking, I would very much appreciate any ideas. All resistances checked out ok, too. > ______________________________________________________________ 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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In reply to this post by Don Schroder
Hi Don W
I’m not sure if I should post progress or regression! Yes, I had turned the tuner while measuring the voltage, it did not change the voltage. So I took it all apart again and went over the Panel & Control boards with a magnifier and pick. Didn’t even heat up the soldering iron, just examined. Results? The tuner NOW moves the frequency, but not ALWAYS, just most of the time. Biggest problem now is, the tuner moves the frequency ONLY DOWN, even when turning it clockwise! (Which I assume should RAISE the frequency). With sporadic tuning (most of the time down, sometimes no change), and only going down and rarely up, I wonder if this is a result of a loose component or loose pin? I think my next move will be to retouch pins with a hot iron, and see what change that brings. Am I moving forward, or spinning my wheels? Thanks for your input! It IS greatly appreciated! Don, KE0PVQ Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 ______________________________________________________________ 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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Don,
By "tuner" do you mean the VFO or do you have the antenna tuner installed? 73, Don W3FPR On 7/13/2018 7:20 PM, Don Schroder wrote: > Hi Don W > > I’m not sure if I should post progress or regression! Yes, I had turned the tuner while measuring the voltage, it did not change the voltage. So I took it all apart again and went over the Panel & Control boards with a magnifier and pick. Didn’t even heat up the soldering iron, just examined. > > Results? The tuner NOW moves the frequency, but not ALWAYS, just most of the time. Biggest problem now is, the tuner moves the frequency ONLY DOWN, even when turning it clockwise! (Which I assume should RAISE the frequency). > > With sporadic tuning (most of the time down, sometimes no change), and only going down and rarely up, I wonder if this is a result of a loose component or loose pin? I think my next move will be to retouch pins with a hot iron, and see what change that brings. > > Am I moving forward, or spinning my wheels? > > Thanks for your input! It IS greatly appreciated! > > Don, KE0PVQ > > Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 > > ______________________________________________________________ > 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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