[Elecraft] K3 loss of power (KPA3 100W)

[kc8wh.mh]

From the repair reportProblems found: poor solder on R5 on KP3ARepair performed: Replaced R5 and adjusted for better solder on KPA3AK3 meets or exceeds all factory specifications.73Mike KC8WHSent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Linda M <wa6vab at gmail.com> Date: 9/11/21  12:42 PM  (GMT-05:00) To: "kc8wh.mh" <kc8wh.mh at gmail.com>, David Sumner <dave.sumner.k1zz at gmail.com>, Lee <troutcm at gmail.com> Cc: Elecraft Reflector - post <elecraft at mailman.qth.net> Subject: RE: [Elecraft] K3 loss of power (KPA3 100W) Please tell Where the Bad solder joint was.   Thanks   Ray WA6VAB  K3   From: kc8wh.mhSent: Saturday, September 11, 2021 7:49 AMTo: David Sumner; LeeCc: Elecraft Reflector - postSubject: Re: [Elecraft] K3 loss of power (KPA3 100W) My K3S lost both power out and receive when set to 13 watts or more. Everything worked fine at 12 watts or below.It turned out to be a bad solder joint.Good luckMike. KC8WHSent from my Verizon, Samsung Galaxy smartphone-------- Original message --------From: David Sumner <dave.sumner.k1zz at gmail.com> Date: 9/11/21  9:15 AM  (GMT-05:00) To: Lee <troutcm at gmail.com> Cc: Elecraft Reflector - post <elecraft at mailman.qth.net> Subject: Re: [Elecraft] K3 loss of power (KPA3 100W) Lee, it may not be that bad. Check Config to make sure KPA3 shows “PA nor” — there are other causes of your symptom as well that others may be able to comment on. 73, Dave K1ZZSent from my iPhone> On Sep 11, 2021, at 8:35 AM, Lee <troutcm at gmail.com> wrote:> > If I had to guess, I would say the finals are blown in my KPA3.> > If I advance the power knob, output is normal up to 12 watts.  As soon as> the power is advanced to 13 watts, the power drops to near 0, perhaps 1/4> watt.> > Any help on troubleshooting?> > Assuming the finals are blown, is it possible to just return the KPA3 to> Elecraft for repair, rather than the K3 itself?> > Thanks for any help!  Lee> ______________________________________________________________> Elecraft mailing list> Home: http://mailman.qth.net/mailman/listinfo/elecraft> Help: http://mailman.qth.net/mmfaq.htm> Post: mailto:Elecraft at mailman.qth.net> > This list hosted by: http://www.qsl.net> Please help support this email list: http://www.qsl.net/donate.html> Message delivered to dave.sumner.k1zz at gmail.com ______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Elecraft at mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to kc8wh.mh at gmail.com ______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to wa6vab at gmail.com