68kMLA Classic Interface
This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.
| Click here to select a new forum. | |
| SE/30 Troubleshooting Aid -J12 Jumper | |
| Posted by: Rjp663 on 2020-11-09 04:56:19 Troubleshooting an SE/30 motherboard with an oscope is almost impossible with how short the power/signal cable is (J12). Has anyone tried making a longer cable for troubleshooting? This is the cable that connects the motherboard to the analog board. thank you, Rick | |
Posted by: cheesestraws on 2020-11-09 05:18:26Has anyone tried making a longer cable for troubleshooting They're standard Molex Mini-Fit Jr. connectors. I actually bought one because I am terrible at crimping cables, but it's not particularly demanding to make one. | |
| Posted by: davidg5678 on 2020-11-09 05:44:36 I made an extension cable with about $20 worth of parts from Digikey. It makes troubleshooting much more convenient as I don't have to reinstall the board between each test. | |
| Posted by: Rjp663 on 2020-11-09 07:11:22 Thanks guys. I have the parts on order. | |
| Posted by: ronan on 2020-11-09 08:23:45 Could you post you DK BOM ? 🙂 | |
| Posted by: davidg5678 on 2020-11-09 08:54:11 https://www.digikey.com/en/products/detail/molex/0766500088/2115964 I used two packages of these and some 24 gauge wire. The connectors as well as the metal pins are included. I used a pair of pliers to crush the metal tabs onto the wires. I have no idea what the correct way to do this is, but it worked fine for me. I'm sure there is an expensive professional tool to crimp these correctly, but my pliers got the job done eventually. 🙂 | |
| Posted by: ronan on 2020-11-09 09:18:34 Yes tools to do this are super expensive ! Thanks for your hints ! 🙂 | |
| Posted by: max1zzz on 2020-11-09 09:52:47 I believe you can use a standard 20/24 pin ATX extension cable and just use the pins one one side of it I haven't personally tested this though as I don't have a SE/30 | |
| Posted by: bibilit on 2020-11-09 11:00:18 Yes, you can do that or make your own from scratch. Using mine all the time, not pretty but works fine.    | |
| 1 |