Thanks for that one, Fern. I have the same problem with static
discharges on #095 and I was going to try the same fix. I'm glad to
know that it will work. Elecraft is aware of this problem, by the way,
and in fact I think even Wayne was involved. There must be paint on the
inside of the front panel in the area of the VFO A shaft on your rig and
mine, but I''m certainly not going to try to take mine apart to verify
my theory!
It took me more than a day to determine just why my rig would shut
done for no apparent reason, but it turns out that plastic wheels on a
plastic floor covering on a dry day in winter is a powerful source of
unwanted energy, at least to a K3.
I don't have much else going on at the moment to fret about, so I
think I'll now worry for a while about what potential long-term damage I
may have done to some critical chip buried in the bowels on the radio as
the result of repeated electro-static shocks of sufficient consequence
as to shut the radio down. Or, maybe not. ;-)
73
Gary, VE1RGB
Fern Rivard wrote:
A while back, I had a problem where sometimes my K3 would shut down and
immediately power back on when I would attempt to touch the main vfo knob. I
had installed the encoder properly by inserting a star type of washer on both
sides of the front panel to provide a good ground. However, I suspected that it
was likely a poor ground of the VFO A encoder but I didn't really want to
remove the front panel from the rig (to do the ground on the back side of the
front panel) as I had quite a time to install the front panel on there to start
with. So, I removed the PTO A knob, nut and washers and carefully removed just
enough paint around the hole where the encoder was mounted so that the star
type of washer would bite into bare metal to ascertain that I had a good ground
but being very careful as to not scratch the front panel so it would be good
idea to use a bit of masking tape just in case one slips.
Now, I haven't a problem since so I suspect that this is what the problem
was with a poor or none existent ground to the A PTO encoder. Jus thought that
I'd pass this one just in case somebody else experiences the same problem. Now
what I would do if putting a new K3 together is to remove enough paint on the
back side of the front panel around the holes of both the A PTO and B PTO
encoders (I never did have the problem when touch the B encoder).
Cheers from Fern VE7GZ
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
