Hi Larry,
My KPA500 exhibits the same problem at times, don't know why. I turn off the amp and then back on and then it will operate in "OPER" mode. I guess it is a common problem. Jim K2ZF -----Original Message----- From: K2GN <k...@k2gn.com> To: Elecraft <elecraft@mailman.qth.net> Sent: Mon, Apr 16, 2012 10:42 pm Subject: [Elecraft] [KPA500] No power out in "OPER" mode Today, I was on 15M CW in a pile-up calling, when I looked at the meters I had no output. AMP was in "OPER". Put AMP in "STBY" and I had output, but at the drive level, naturally. I did NOT see any faults or hear a beep. I check all Menu items and found them right on the factory settings. I read a few reflector messages via Nabble that described the same symptoms but there wasn't any solutions offered or follow up fixes. There was something about low voltage, so I checked my 2nd KPA500. Running just fine. Switch power sources on the AMPs and the problem stayed with the 1st AMP. I'm stumped but it doesn't take much to do that. I'll call Elecraft tomorrow but in the meantime, any suggestions? Larry/K2GN Larry/K2GN - http://k2gn.com <http://k2gn.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 ______________________________________________________________ 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