I too had RFC15 go open and I also was very careful and didn't think I did anything to break it. I was even more careful with the replacement and it works fine.
I'm not sure if bending the leads made it go open circuit or heat from the soldering process. I didn't yank on the leads but you sure have to bend them a lot to make it fit. I also didn't over heat the device. One of the two processes apparently broke it. It must be really fragile. 73, Roger, W1EM -----Original Message----- From: Stewart Baker Sent: Wednesday, October 05, 2005 4:22 AM To: [EMAIL PROTECTED]; [email protected] Subject: Re: [Elecraft] K2 VCO trouble and fix On Tue, 04 Oct 2005 21:33:17 -0400, [EMAIL PROTECTED] wrote: > I e-mail Gary at Elecraft (3:01pm) > Get a reply from Gary (4:33pm) > > He gave me a PAGE worth of "might be"... one being to check RCF15. He > said if it was open it can cause all sorts of odd problems. > > Well, it WAS open... I must have bent the leads to much or heated it > too much, or whatever. Anyway, I bridged across it momentarily to see > what effect it would have. > Guess what? ALL VCO voltages were well within limits...including 10m > high freq. Without even touching L30. So, I ordered a new choke and > thanked Gary for a quick and accurate response. Glad that with Gary's help you found the problem. A search of the reflector shows that there is a high incidence of RFC15 going open circuit. It is such a fragile device (probably too fragile), and I believe that Elecraft should change it for one that is more robust. When assembling my K2, knowing this to be a potential problem, I took particular care in soldering the RFC, only to find that it too had gone open circuit. 73 Stewart G3RXQ _______________________________________________ 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
