I think you have one of the newer units where Elecraft improved the design by putting one wire above and another below the PC board. Mine was #309 with both wires above the PC board. They had arced.
Raj, N2RD > On Mar 10, 2021, at 12:53 PM, Dennis Moore <[email protected]> wrote: > > I checked inside my tuner, I only have one green wire instead of two. Serial > #2120. > > I also have the issue of erratic tuning when applying power, adding an > additional common mode choke helped calm things down. > > Dennis NJ6G > > On 3/8/2021 09:07, Rajiv Dewan wrote: >> I had a similar issue with my KAT500. I opened it up and the problem was >> obvious: there are two green 12g wire bridges that cross. (You can see them >> in this image: ([email protected] >> <https://cdn.shopify.com/s/files/1/2029/4979/products/[email protected]?v=1536760566>. >> You can see one end of the longer green wire near the big red toroid.) >> There had been arcing between them. My guess is that they arced at higher >> power levels. I replaced them with slightly longer wires and bent them to >> create more clearance. That solved my problem. >> >> I recommend taking taking the cover off and taking a look. The problem may >> be obvious as it was for me. >> >> Raj, N2RD > ______________________________________________________________ > 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]
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