Thank you Dick. I will be returning to that QTH with another power supply and cable, deoxit and sandpaper to clean connections. I did turn the offending Astron supply off and on at the switch but didn't unplug it. Would that have been enough to reset the crowbar circuit?
Gary W7TEA On Oct 4, 2013, at 1:23 PM, Richard Fjeld [via Elecraft] <ml-node+s365791n7579576...@n2.nabble.com> wrote: > This may be premature, but if you don't find trouble, it could have been that > the 'crowbar' circuit on the regulator board may have operated to protect > your radio from high voltage, in which case doing a power cycle on the PS > will have reset it. > > We had a thread relating to this one year ago. > > I have seen the crowbar circuit operated in several power supplies without a > fuse blowing. The PS just cooked until reset. Not much of a problem if the > PS is attended, but some of the power supplies were un-attended and got quite > hot. > > I have looked into the possibility of modifying the circuit to blow a fuse > when this happens, but it would be a thread of it's own. > > Dick, n0ce > > > ----- Original Message ----- > From: Gary, W7TEA > To: [hidden email] > Sent: Monday, September 30, 2013 10:29 AM > Subject: Re: [Elecraft] K3 suddenly dies > > > I will be at the scene of the suspect power supply the end of next week and > will clean the cable and fuse as suggested. QTH is on the Long Beach WA > peninsula 300m from the beach so connections certainly could use attention. > Maybe it is that simple. I will take my working PS and cable to try > substitutions as well. > Will post an update and again, I really appreciate the quick and helpful > responses from the group. > > > > > > > ----- > 73, > > Gary W7TEA K3 #1001, #5763 > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-suddenly-dies-tp7579305p7579407.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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 > ______________________________________________________________ > 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 > > > If you reply to this email, your message will be added to the discussion > below: > http://elecraft.365791.n2.nabble.com/K3-suddenly-dies-tp7579305p7579576.html > To unsubscribe from K3 suddenly dies, click here. > NAML ----- 73, Gary W7TEA K3 #1001, #5763 -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-suddenly-dies-tp7579305p7579577.html Sent from the Elecraft mailing list archive at Nabble.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
