Well, at least you did (a logical) SOMETHING which in all probability, fixed the intermittent. The hardest problems to solve are those where the fault just disappears but you did NOTHING to fix it.
Fault...open lid....close lid...problem fixed = Yuge question mark! Thanks especially for sharing your "fix". It may save a few of us a lot of hair-pulling and/or a trip back to Elecraft. It is very frustrating to hear of a problem, and never find out what fixed, or didn't fix it. 73, Charlie k3ICH -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Dennis Sent: Monday, March 20, 2017 7:34 AM To: Reflector Elecraft <[email protected]> Subject: [Elecraft] K3 Stops Transmitting (solved) A couple of weeks ago I posted that my K3 suddenly stopped transmitting during ARRL CW. The PTT would enable, it was not in TEST mode, the CW monitor would sound, but no output. Pushing the TUNE button would result in "0 watts" showing on the display. The problem persisted after I power cycled the radio, plugged/unplugged the DC source, tried various control changes, and a soft "drop" test. Through all of this, the Rx worked just fine. Nothing restored the radio transmitting ability. So, I swapped it out and continued the contest. When I got home, I hooked the radio up and it transmitted just fine. Something happened that stopped the radio from transmitting, but now it worked fine. So I posted my experiences here and asked for suggestions. A number suggested the DC power supply cable. My experiences at the site suggested that wasn't the culprit. A number suggested that I had somehow put the radio into "TEST" mode, but I was sure I had not. I even toggled into and out of "TEST" mode several times, but that didn't solve the problem. Several suggested that a voltage had been applied to the Inhibit pin of the ACC15 connector, but there was nothing plugged into the ACC15 socket. Two suggestions seemed most plausible: that one of the coax cables from the new synthesizer to the other boards was intermittent, or that the Sub Rx plugs was intermittent. Once I had a place to look, I opened the radio and did the following: 1. Took a pair of long nose pliers and GENTLY rotated and firmly seated each coaxial cable connector connecting the synthesizer board to the rest of the radio. All seemed to be secure and in tight, but they were all rotated just a little. 2. Checked the seating of the Sub Rx into its connectors. The back connector was not fully seated- I'd say it was about 80% seated, but there is a little play in the connector. It is now fully seated. Since then, I've operated the radio about 30 hours in contesting. The no transmit problem has not come back. Did I fix it? The problem had never happened before, I don't have a clear problem that was solved, but it has made it 30 hours now without a problem. At least for now, I feel the problem has been solved. Dennis W1UE ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
