Sometimes the screws holding the board to the capacitors loosen up after a few
years.
On 10/17/2013 7:14 AM, Gary, W7TEA wrote:
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]"
<[email protected]> 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.
--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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