Bill, Thanks for that vote of confidence, but Alan is in Belize, so that makes shipping more complicated (but not impossible).
Yes, I have an assembled and tested Front Panel and an assembled and tested Control Board that I can substitute for a quick decision about which board is faulty. Other operators in this world do not have that capability immediately at hand. I have developed a familiarity with the K2 over the years, and my Electrical Engineering education has given me the fundamentals and the last 10 years of my working career were involved with designing (and conducting) test plans to substantiate the specifications of various pieces of hardware. That latter experience has given me a lot of insight into troubleshooting techniques, but has taught me to approach a problem in a logical manner - in other words, shotgunning a problem may work, but it is usually easier and quicker to analyze it and produce a specific correction. The advantage is that when that is accomplished, you know it is fixed "right". 73, Don W3FPR On 6/15/2012 6:16 PM, Bill K9YEQ wrote: > Or, just send the unit to Don, who is very good at fixing K2's. He goes way > back to the beginning of the Elecraft startup K2 FT group and does repairs. > If I needed mine repaired and couldn't fix it myself, I would send it to > him. > > 73, > Bill > K9YEQ > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm > Sent: Friday, June 15, 2012 4:42 PM > To: Alan Slusher > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K2 tuning issue > > Alan, > > I hate to be the bearer of bad news, but I believe you are describing an > encoder failure or an MCU failure at either the ENC A or ENC B inputs. > It is difficult to say which it may be - the encoder is the single most > expensive component in the K2 and the MCU (Control Board U6) is the second > most expensive. > > Replacement/substitution is the best test to determine which of those two > components is failing. > If you can find another ham with a K2, you may be able to try using his > front panel board on your K2 - if it works, then it is the encoder - if not, > then the MCU is the most likely suspect. > > If you have not upgraded that K2. you may want to do so at this time, > including the A to B mods (along with the other mods listed in the A to B > instructions, add the Keying Waveshape Mod along with a new set of IF > crystals and new firmware and your early K2 will perform just as well as a > brand new kit. > > 73, > Don W3FPR > > On 6/15/2012 4:59 PM, Alan Slusher wrote: >> I have an older K2/10 (serial 868) which has worked very well for years. >> Today I suddenly became aware of a problem: I can't change the frequency >> using the tuning knob (yes, I did check the frequency lock). >> The final frequency number on the display blinks (eg: the "4" in 14301.24) >> (happened to have been listening on the 14.300 net) but no number changes >> when the frequency knob is turned, and the radio's frequency does not > change >> either. >> No problem with frequency change using direct frequency entry (the two > band >> buttons followed by the frequency numbers), >> and the RIT works just fine. >> I did the 456 reset before reading the instructions about saving the CAL > FIL >> numbers, with the result that I guess I will have to go back through that >> procedure (I now have to punch in 14301 and use the RIT to move to > 14.301.24 >> to listen on 14.300, had been spot on before). >> The K3 next to it and the Kenwood 430 below it continue to work just fine >> off the same two antennas (a vertical and an 80m dipole - both through >> tuners). >> >> > ______________________________________________________________ > 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 > ______________________________________________________________ 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
