JP1 Remotes

Why not this:
https://www.jameco.com/z/371-Adafruit-I ... 01127.html
plus this:
https://www.jameco.com/z/77313-118-04LF ... 03879.html

Plug and play with any 6 connector cable. No cutting, no terminations, no soldering.

I'm still not understanding how your cables wear out though.

I'm still not understanding how your cables wear out though.

It was mostly due to how deeply seated the JP1 port is in the C4000, and not having shrink tubing.

And the new cables were not seating at all.

Why not this:
https://www.jameco.com/z/371-Adafruit-I ... 01127.html
plus this:
https://www.jameco.com/z/77313-118-04LF ... 03879.html

Those are helpful.

This one worked great (on the C4000) right out of the box,
https://www.ebay.com/itm/335080899752

I used heat-shrink tubing this time.

(It was not able to resuscitate my bricked 3680, however.)