I had a failure of the EL5146C op amp. You might check it. In my case, mine shorted internally, which brought the +5 volt supply to zero, which made the K2 think the KPA100 was not installed. But, yours might have opened or something.
I think D16 & D17, as well as the EL5146C might be pretty good targets for static discharges from the antenna. On Jan 3, 2014, at 8:21 AM, Mike Sanders <k...@centurytel.net> wrote: > Sorry that should have been D16 and 17. I'm going to look at the > circuit again and again. 73 > > K0AZ > Mike Sanders > EM37cd SW Missouri > www.k0az.com > > > > > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Sanders > Sent: Friday, January 03, 2014 7:13 AM > To: Elecraft@mailman.qth.net > Subject: [Elecraft] K2/100 7211 TX Power output meter stopped working > > Good Morning, Yeah, not sure what happened but appears when in > high power mode over 10 watts power control does not work either. > It gives full output. I just replaced diodes D1 and D2 1N5711s but > the problem continues the same. Before I get any deeper into this does > anyone have any experience with this failure and any ideas? I sure > thought the diodes would fix this. I triple checked my work and the > orientation of the diodes on the board. 73, Mike K0AZ > > K0AZ > Mike Sanders > EM37cd SW Missouri > www.k0az.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 Bill Coleman, AA4LR, PP-ASEL Mail: aa...@arrl.net Web: http://boringhamradiopart.blogspot.com Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ______________________________________________________________ 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
