Ian wrote: Date: Tue, 10 Nov 2009 15:18:00 +0000 From: Ian Maude <[email protected]> Subject: Re: [Elecraft] K3 power down problem To: Elecraft List <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=windows-1252
Yep as per my thread, I did it but still the same issue. I cannot imagine that was the issue though on #455 after all this time. 73 Ian 2009/11/10 Greg - AB7R <[email protected]> > This is the mod description from the website: > > This modification adds a diode to the KPA3 12V sense circuit to hold the > voltage to no > more than 0.6V when the K3 is turned off. Without it, some K3s refuse to > turn off when > the POWER button is tapped because the 12V sense circuit does not drop to a > low enough > level to shut down the K3???s MCU. > > The diode is a common leaded part. No work with SMDs is required. A minimum > of > disassembly is required and no boards need be removed to perform this > modification. > You're not alone Ian - we have two K3s #320 and #321 in a Multi-Single or Multi-Two arrangement for CW contesting. #321 developed the power down problem so I did the mod. No effect at all. #320 has never had the problem, even though they run off the same 12v power supply. Not a show-stopper - I just disconnect #321 until contest time.<G> 73, Ken ZL1AIH (ZM1A in contests) ______________________________________________________________ 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
