SE/30 Troubleshooting Aid -J12 Jumper

[Rjp663]

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

 

[cheesestraws]

Has 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.

 

[davidg5678]

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.

 

[Rjp663]

Thanks guys. I have the parts on order.

 

[ronan]

Could you post you DK BOM ?  

 

[davidg5678]

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.

 

[ronan]

Yes tools to do this are super expensive !

Thanks for your hints !

 

[max1zzz]

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

 

[bibilit]

Yes, you can do that or make your own from scratch. 

Using mine all the time, not pretty but works fine.