Hello, together with Harald DD0VS, we narrowed it down to the diode D1 on the LPA board. I will now order the diode and some probably affected parts around the diode and start replacing and testing again.
I will report again. Many thanks to all others with giving different hints! 73s Chris DL1MGB Am 24.03.2021 um 21:03 schrieb Christian Janssen DL1MGB: > Hello, > > it happened during the Russian DX Contest last Saturday, from one second to > another. No output. When I tune the display looks like this: > http://dl1mgb.com/temp/k3_no_power.jpg > > Following conditions: > > - sending into a 50 ohm dummy load > - no matter how many watts are set with PWR knob > - Test mode off > - TX INH off > - all driver transistors working (three screw test) > - no output power also on external watt meter > - happens on all bands > - happens with KPA set to "not inst" > - knocking on housing doesn't change anything > - when starting the antenna tuner, it says 5.0 watts, but no output on the > external watt meter > > I am running out of ideas :-) > > 73s Chris DL1MGB > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
