---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 07/12/15: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:35 AM - Re: SL-15 Unswitched Audio Connection (Robert L. Nuckolls, III) 2. 09:45 AM - Re: SL-15 Unswitched Audio Connection (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 09:35:12 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: SL-15 Unswitched Audio Connection At 10:59 AM 7/9/2015, you wrote: >I have a SL-15 Audio Selector Panel that has two "unswitched" audio >connections. One is hooked up to my AOA warning. I would like to >use the other for the audio of the Advanced Flight System 5600 EFIS >I am installing. The SL-15 uses Molex 08-05-0301 connectors which >are discontinued and I cannot find them anywhere. > >My three options seem to be: > >Find someone who has a connector I can purchase (failed so far but >maybe one of you has an extra) How many pins are in these connectors? That style of connector was received with considerable excitement at Cessna . . . waaayyyy back when. For a few years, we made up our own audio switching and signal routing junction box utilizing the .156 spaced, card edge connectors. They were the "Amp Leaf" from Amp-Inc. http://tinyurl.com/qbqndka http://tinyurl.com/p2dfvfs Later, others jumped in with their own offerings . . . one of which was the KK series from Molex http://tinyurl.com/7t6jjsc Cessna got out of that activity after a few years in favor of exploiting off-the-shelf devices . . . that first experiment into rudimentary avionics manufacturing had some reliability issues. I wasn't directly involved in the engineering gyrations . . . but I got to observe it and write about it. There proved to be other form-factors for bringing wires off pc boards that were a quantum jump in reliability for black-boxes on airplanes. Nonetheless, King radio, Narco and others produced a goodly number of devices with this technology. The .156" card-edge has been 'not recommended for new design' for a very long time. This poses problems for exploiting the utility of these venerable devices. Quite often, extending the air-worthiness of these devices goes beyond finding pins for adding features. What's a OBAM'er to do when the existing connector has degraded to one step above trash . . . or worse. I've stroked new service life into several devices by replacing the crimped pin connector with solder flag connectors. Like this . . . http://tinyurl.com/nbuab2a Unfortunately, not ALL sizes are available but with some creative application of time/effort and JB weld, you can fabricate a connector of any desired size that offers you all new pins. Check out all the images in the third link above. Bob . . . ________________________________ Message 2 _____________________________________ Time: 09:45:18 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: SL-15 Unswitched Audio Connection >If you have that spare that can be moved, there's usually a little >tab on the back side that prevents it from backing out. If you have >something thin and narrow enough, you should be able to slide it in >from the 'front' (non-wire) end and push the tab away from it's >mating lock point in the shell. Here's a DIY extraction tool for the leaf-style card edge connector pins. http://tinyurl.com/nknv4bk Made this from a pocket screwdriver sacrificed to the task while on a field-trip . . . A little creating grinding will get you the right dimensions for your target connector. Bob . . . ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.