Thanks for the suggestion, Ed, but I don't see any hint of carbon on either the plug or the receptacle pins that connect the KPA to the rest of the radio. Do you know -- or does anybody know? -- what sort of "quick check" of voltages I could measure to check whether the KPA is functional?
Thanks again, Ed! 73, Joe M. On 12/23/2009 7:43 PM, Ed K1EP wrote: > This happened to me. The connector between the KPA and the vertical > board failed. The contact carbonized. Once one of the six starts to > fail, the others take up the extra current and then they fail. If you > disassemble the KPA you will notice the blackening of the six pins that > carry the PA current. Replacement of both the male and female connector > is required. If you loosen the connection and wiggle things around, you > might get enough friction to get it to run for a little, but it will > eventually fail again. > > > At 12/23/2009 07:38 PM, you wrote: >> In the past few days, I've noticed the KPA3 in my K3 serial number #584 >> acting "flaky". Well, today it apparently failed -- or maybe I'm >> missing something (?). No matter what I do, the rig is limited to 12 W >> (or so it says); I've switched the KPA3 on and off numerous times in >> software, I've removed and reinserted the KPA3, I've checked the circuit >> breaker with a VOM out of circuit, I've tried another power supply, and >> so on. No joy. Before I contact Elecraft I'd like to hear the >> collective wisdom of the group -- what else can I try to get things >> working. ______________________________________________________________ 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
