Good Morning Guilio: This is not an uncommon failure. About six(6) months ago the fix was to remove L10 and jumper the holes where L10 was installed with a suitable piece of wire. I did that on mine and have had no problems with it since.
Be sure to email [email protected]. There may be another fix now that I don't know about. 73, Ken K3IU ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ On 1/6/2010 6:55 AM, Giulio Pico - IW3HVB wrote: > Yesterday I paid a visit to a firnd, Giancarlo I3GKK, who was very > worried about an accident happened 3 days ago. > Suddenly, during a brief tx period (10 seconds) at 100 W into a Windom > antenna, he saw smoke coming out from the top panel of his K3. > Since then no power out on all bands (measured with an external wattmeter). > The internal wattmeter of the K3 reads correctly and the supply current > is regular, on both high and low power, so it seems that the TX stages > are ok. > Looking into the area for smoky parts I found that L10 (96 nH), at the > output of the KAT3 unit is badly burned. The enamel on the wire is gone > and with the ohmmeter the inductance measures more than 7 ohms :-/ > My guess is that SWR was a little too high, but within the tuning range > of the KAT3. It was raining heavily when the fault has occoured. > Measured the antenna with the MFJ-259B and it seems almost ok on all > bands (less than 2 in the worst band, all the others less than 1.4). > Anyone have had similar experiences? > > 73 de Giulio IW3HVB > > ______________________________________________________________ > 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 > > ______________________________________________________________ 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
