[Elecraft] K3 suddenly dies

[Gary, W7TEA]

Good morning Don.  The PS suddenly died on me at our beach house in Long Beach.  I had no equipment there and first
assumed it was my K3.  Brought the rig home to Portland and it worked fine.  So, it was the supply, an Astron RS35A--couple years old. 
 Anyway, checked the fuse, cleaned contacts etc and it was .8v at the terminals. .  So, I replaced the voltage IC which I got from 
Mouser and used Deoxit on the the voltage adjustment pot.  I have another RS35A which has run fine for over 30 years. 
 
I don't feel comfortable playing around inside a live supply but will take the cover off and do another visual inspection while unplugged.
It has to be something simple I would think. 

thanks Don,  Gary W7TEA




On Oct 17, 2013, at 5:42 AM, "Don Wilhelm-4 [via Elecraft]" <ml-node+s365791n7579965h80 at n2.nabble.com> wrote:

> You did not show any of the prior information (one of the problems with 
> posts from Nabble), so I can only guess that you are working with a 
> power supply problem. 
> A situation like that is often caused by something loose in the negative 
> side of the supply, something that is frequently overlooked. 
> 
> 73, 
> Don W3FPR 
> 
> On 10/17/2013 1:54 AM, Gary, W7TEA wrote: 
> > Well, traded out the voltage regulator IC and no joy.  Then I tried Deoxit on 
> > the adjustment pot, tweaked it a bit and measured voltage at 13.8vdc! 
> > Great! Turned it off and on, tried it again, and was ready start bragging to 
> > the XYL---but it was back to .8v.  Didn't see any suspect components while I 
> > had it open. 
> > 
> > 
> 
> ______________________________________________________________ 
> Elecraft mailing list 
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] 
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
> 
> If you reply to this email, your message will be added to the discussion below:
> http://elecraft.365791.n2.nabble.com/K3-suddenly-dies-tp7579305p7579965.html
> To unsubscribe from K3 suddenly dies, click here.
> NAML





-----
73,

Gary W7TEA  K3 #1001, #5763
--
View this message in context: http://elecraft.365791.n2.nabble.com/K3-suddenly-dies-tp7579305p7579967.html
Sent from the Elecraft mailing list archive at Nabble.com.