Ron, It sounds like something is drawing excessive current in your K2 and causing the resettable fuse to open. Open the K2 and check the resistance from the Q7 and/or Q8 collectors to ground. It will normally be in excess of 1500 ohms, but if it measures low (100 ohms or so) I would wager that one of your PA transistors has gone "belly up".
73, Don W3FPR Ron McCurdy wrote: > While listening the K2 just cut off. When I try to turn it on, the lcd > flashes on and immediately back off, as if, the MCU was shutting it off. > The power supply voltage is fine and there are no external fuses blown. > Where should I look first? > > Mac > > > ______________________________________________________________ > 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 > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.287 / Virus Database: 270.12.0/2066 - Release Date: 04/18/09 > 09:55:00 > > ______________________________________________________________ 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
