Yep, according to the schematic, these are all associated with the SCANADC1 line. SPOT is also on that line, do you have trouble with that button?
A while back I had trouble with some of the buttons on the SCANACD3 line in K3 #495 - Width and AFX in particular, but after a few days the problem went away suddenly - I have no idea why. Bob NW8L On Sat, Apr 17, 2010 at 11:55 PM, Dave Hachadorian <[email protected]> wrote: > Interesting. I also have several buttons that don't work on my > K3: > band up > mode up > ant > shift/lo/norm > rate/lock > NR > > The radio is still usable, and I'm waiting for a break in the > contests to send it in for repair. > > Dave Hachadorian, K6LL > Yuma, AZ > > > -------------------------------------------------- > From: "Paul Ferguson" <[email protected]> > Sent: Saturday, April 17, 2010 7:28 PM > To: <[email protected]> > Subject: [Elecraft] K3 button problem question > >> Seven of my front panel buttons do not function on K3 #757. I >> also used the >> Switch Test to see that they give no scan codes. All other >> buttons work OK. >> >> Looking at the the schematic for the "Front Panel - Switches" I >> see these seven >> buttons are all connected to the SCANADC0 line into U3. I took >> off the front >> panel and put an ohmmeter from ground to the SCANADC0 line, and >> it gives a few >> ohms. The other lines (SCANADC1-7) show as open. >> >> I looks like either U3, C30, or R27 is bad. Does anyone see any >> other >> possibilities? >> >> I don't relish replacing U3 since it is a 16-pin IC. Maybe some >> Chip-Quik or >> tiny cutters to snip the leads would ease the job. >> >> 73, >> Paul >> K5ESW >> ______________________________________________________________ >> 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 > ______________________________________________________________ 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
