On Thu, 24 Jan 2008 10:08:26 -0500, Don W3FPR wrote: >If you are going to add the toggle switch, there is no need to replace >the jack. >The toggle switch replaces the contacts that no longer work. >73, >Don W3FPR >
The defective contact lies at the rear pins of the jack, which you can easily parallel with one pole of the switch. But you will also want to switch the ground (i.e., sleeve) terminal of the jack with the other pole, opposite throw (a DPDT switch). If you don't switch the ground/sleeve line the headphones will end up being in parallel with the speaker when it is selected. The ground/sleeve terminal lies on the board side of the jack so you will have to remove the jack to get to it; might as well replace it with a good jack. Of course, you could leave the defective jack in place, cut the ground circuit trace and solder tack the switch across it. But that's no easier than just replacing the jack with a good one, and no messing with the traces. Referring to my notes, the switch I used was p/n: 8011 from Web-tronics. It is a DPDT (on-x-on) miniature size. Fits neatly in the transverter hole beneath the speaker jack. 73, Drew AF2Z _______________________________________________ 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
