Hello Rick (NK7I) and Andy (K3WYC) - Tnx replies "Message: 17 Date: Wed, 24 Apr 2024 14:11:28 +0000 From: Andy Durbin <a.dur...@msn.com> To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> Subject: [Elecraft] KPA-500 Failure Message-ID: < dm4pr10mb6791e0db00b79830385f5cd28c...@dm4pr10mb6791.namprd10.prod.outlook.com >
Content-Type: text/plain; charset="iso-8859-1" "With the OPER light GREEN and slowly increasing the RF drive level to the amp, there is a point where an internal relay 'click' can be heard, the 50-watt LED on the top row of LEDs turns red and the FAULT light turns red." All the KPA500 LED are single color. The 50 W LED is either lit green or not lit. Did it appear to be red because of light leakage from the FAULT LED? Some quite detailed discussion of KPA500 failure modes on the groups.io forum: https://groups.io/g/KPA500/topics 73, Andy, k3wyc " ============================ IF I remember correctly, the entire top row of LEDs flashed red in color when the failure happened. After removing the top cover, the PA assy is visible but there appears to be no easy way access it due to a large bolt connecting the round transformer to the bottom plate. Will have to access the home-builder manual to figure out how to inspect the PA assembly. TU for the reply -- Dick/w7wkr ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com