I seem to recall it was the caps. Their leads disintegrated. I reused the inductors and used new caps. I may have pictures of that operation I can dig up.
Barry - N4BUQ ----- Original Message ----- > From: "R-390 Mailing List" <[email protected]> > Cc: "R-390 Mailing List" <[email protected]> > Sent: Sunday, June 23, 2024 4:04:19 PM > Subject: Re: [R-390] R390 EMI filter replaced. > BarryWhat failed? Shorted cap or open inductor?Jim > Logic: Method used to arrive at the wrong conclusion, with confidence. Murphy > > On Sunday, June 23, 2024 at 03:34:34 PM CDT, Barry Scott > <[email protected]> wrote: > > Looks good. Mine failed a couple of years ago and I rebuilt it. It wasn't > fun but it can be done. > > Thanks, > Barry - N4BUQ > > > On Sat, Jun 22, 2024 at 1:09 PM Frank Hughes via R-390 < > [email protected]> wrote: > >> An R-390 I picked up years ago at a local Hamfest stopped powering up. >> Traced the issue to the SPRAGUE AC line filter. >> Replacing it w/ a CORCOM 3EQ1, which fits in the space where the original >> filter was installed. >> >> I recovered the original 4-pin male R-390 power connector from the SPRAGUE >> filter, >> so that the original power cord and appearance can be maintained. >> 73 >> Frank >> KJ4OLL >> >> >> ______________________________________________________________ >> R-390 mailing list >> Home: http://mailman.qth.net/mailman/listinfo/r-390 >> 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 > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > 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 > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > 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 ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 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
