I was able to do some diagnostic work to determine that D35 is shorted. How this could happen is a complete mystery? I've never had anything plugged into J11 (the 12V accessory out jack), so don't quite understand this. The trace from the end of D34 to RF choke RFC48 is a little over-heated but still usable (well, I never had plans to use external power for anything so it won't be a problem). I'll discuss this with tech support in the AM and this may be as easy as lifting D35 and it's good to go. Maybe...
Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ Owner - Operator Big Signal Ranch Staunton, Illinois email: b...@wjschmidt.com -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Sunday, July 29, 2012 8:22 PM To: b...@wjschmidt.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Dead K3 Bill, Your "cc" to k3supp...@elecraft.com did not show on what I perceive as your original post, so you may want to send something separate. OTOH, since you are in a bit of a hurry (laving on Friday), and support has to wade through the entire weekend's worth of email, you may do better to phone 831/763-4211 first thing (8AM) California time - well, leave enough time for Dale and Howard to settle down to their work positions and have a few sips of thier morning beverage. In the meantime, check the obvious - remove the APP from the back of the K3 and check the voltage with your DMM - there is a possibility that there is a problem with the DC power cable. If you assembled that power cable, take a look at the end of it - the blades of the connectors must be clipped securely over the spring fingers in the housing. If you need a diagram of how it should look, check figure 29 on page 37 of the XV transverter assembly manual - http://www.elecraft.com/manual/Assembly%20Manual%20XV50,144,%20222%20Rev%20D .pdf 73, Don W3FPR On 7/29/2012 7:48 PM, Dr. William J. Schmidt, II wrote: > Thanks for the help. I already "cc'd" them on the original post so > they will know... and I will be on the phone tomorrow ASAP. The > customer service is excellent. My fear is, leaving on Friday... if > it's anything more than pushing a button/ resetting something/ > removing a module... this radio stays home. > > Man the article I'm writing on Island radio is not looking pretty... > > > > Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ > > Owner - Operator > Big Signal Ranch > Staunton, Illinois > > email: b...@wjschmidt.com > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dale Boresz > Sent: Sunday, July 29, 2012 6:34 PM > To: b...@wjschmidt.com > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Dead K3 > > Bill, > > Sorry, that's about the only thing that comes to mind that you could > try without some disassembling. I agree, it sounds like D28 is not the issue. > I'd call Elecraft Tech Support tomorrow and I'll bet they can help you out. > > Best wishes for a quick and easy fix! > > 73, Dale > WA8SRA > > > > On 7/29/2012 7:16 PM, Dr. William J. Schmidt, II wrote: >> Thanks for the tip... Measured about 995 ohms at the connector, so it >> appears D28 is still intact. >> >> >> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ >> >> Owner - Operator >> Big Signal Ranch >> Staunton, Illinois >> >> email: b...@wjschmidt.com >> >> >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dale Boresz >> Sent: Sunday, July 29, 2012 6:07 PM >> To: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] Dead K3 >> >> If you can, check the resistance across the K3 "12VDC IN" Power Pole >> connections (after you've disconnected your Power Supply of course). >> >> On my K3, an internal zener-like diode (D28 on the RF Board) >> evidently gave up its life to protect the radio from an overvoltage, >> and evidently the failure mode is a short circuit. This diode goes >> straight to ground immediately after the 6A inline fuse. I think the >> fuse is an auto-resetting fuse, so you can probably assume it is >> still completing the circuit for the purposes of your resistance >> measurement. If you measure a dead short, the culprit is likely D28. >> >> 73, Dale >> WA8SRA >> >> >> >> >> On 7/29/2012 6:32 PM, Dr. William J. Schmidt, II wrote: >>> So I was testing out my new K3 before I take it to J6 next week for >>> a little DXPedition work. and after about an hour of operation.. it >>> just quit. Dead as a door nail. has power to the back (checked) but >>> never so much as the display activating. Any ideas? I SURE don't >>> want to go back to that Flex >>> 3000 that I had so much trouble with on PJ4.. >>> >>> >>> >>> >>> >>> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ >>> >>> >>> >>> Owner - Operator >>> >>> Big Signal Ranch >>> >>> Staunton, Illinois >>> >>> >>> >>> email: <mailto:b...@wjschmidt.com> b...@wjschmidt.com >>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> 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:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email >> list: http://www.qsl.net/donate.html >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 10.0.1424 / Virus Database: 2437/5163 - Release Date: >> 07/29/12 >> >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1424 / Virus Database: 2437/5163 - Release Date: > 07/29/12 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1424 / Virus Database: 2437/5163 - Release Date: 07/29/12 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
