Things to check: Pins if not gold D25 and other pin diodes in the QSK circuit. The several push function knob circuits, a stuck knob causes very strange issues depending on what is stuck. Yes, the internal push in coax jumpers. Reset them all.
After that just normal troubleshooting, checking all internal power circuits first. 73, Bill AK5X Sent from my iPhone > On Jan 27, 2025, at 6:02 PM, David Hachadorian <k6ll.d...@gmail.com> wrote: > > Does your K3 have gold front panel pins? The older tinned pins caused a lot > of intermittent problems. I think the changeover to gold happened around > serial #5500. > > Before I replaced mine with gold, I got so I could remove the front panel, > spray the tin pins with DeoxIT, and reassemble the radio in under 20 minutes. > It was like a Wood Brothers NASCAR pit stop. > > GL! > > Dave Hachadorian, K6LL > Yuma, AZ > > >> On 1/27/2025 2:31 PM, n0...@juno.com wrote: >> Hi Gents, >> >> My K3 has a problem and it's intermittent. Maybe someone >> has had the same issue and knows of a possible remedy. >> Here are the symptoms: >> 1. Switch on radio. Nothing being received except I can >> hear the neighbor's electric fencer and I can hear *some* "normal" >> powerline noise. NO signals heard on the AM Broadcast Band >> which is very unusual. It's like the signals that need to be >> processed/demodulated aren't. >> 2. Radio doesn't transmit when the no receive problem occurs. >> 3. Turn off radio... >> 4. Turn radio on and everything is normal, sometimes. >> 5. It doesn't seem to matter if the radio is warmed up or not. >> 6. Voltage to the radio is okay at all times. >> 7. Audio out is okay at all times., i.e it isn't totally dead. >> 8. Gently "banging" on the radio doesn't help...connections all >> okay in back of the radio. >> 9. I can hear some noise increase/decrease when the RX pre-amp >> is switched in/out. >> 10. The attached P3 sometimes won't update either when the freq >> is changed...recycle the K3's power switch and then all okay >> with the P3....might be a separate issue. >> 11. Other bands have the same "no receive" problem. >> >> So...any ideas to help me zero-in on something to check first after >> I open the covers? >> >> Thanks, >> Charlie, N0TT >> >> ______________________________________________________________ >> 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 tok6ll.d...@gmail.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 a...@me.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 arch...@mail-archive.com
