said by sm5w2:
I thought there was a gizmo (reflectance meter?) that can tell you that the wire has a problem so-many-feet from the test point. ???
The problem with TDR and most other troubleshooting tools/techniques is that none of them will reliably locate intermittent problems while they are absent if the line goes back within specs between occurences.
That's what makes intermittent problems so troublesome.