I was 'inside' #24 anyway and saw this posting. Measured the DC resistance across the CB. I can't measure any resistance with the Fluke DVM.
When keyed down on TUNE at 50W, I see no drop across the CB. Sounds like the contact suface is corroded or contaminated on yours. Better replace it. At least that's easy to do, and Elecraft should help you out on this. 73, matt W6NIA On Sun, 15 Mar 2009 09:36:47 -0400, you wrote: >All of a sudden this morning, I started getting an error message on >my K3, ERR 12V. Then it scrolled Check Circuit Breaker, which I >assume was the PA circuit breaker. The radio would not transmit >until power cycled and the power level was reset to below 12W. I am >not convinced that it is a thermal issue, although it could be. I >monitored the PA temp and it doesn't have a direct >correlation. Temps are in the high 30's to low 40's. I removed the >top cover and inspected the circuit breaker. There seems to be >significant IR drop (10s of mv) across it even when not transmitting, >so I am wondering if maybe the circuit breaker is failing. Has >anyone seen anything like this before? > >______________________________________________________________ >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
