Here are some interesting hints for trouble shooting Audio problems, and wiring and cable problems. ProCo began building cables when we were still building P.A. systems in the mid-70s. Of course, we now build hundreds of thousands of cables a year. Probably half of those returned , however, have nothing at all wrong with them other than looking their age. Likewise, be sure that the controls and switches are not noisy or intermittent.
Most problems occur within the first foot of cable at each end.
Bending the cable at different angles will often reveal broken solder connections or wires. Sometimes a broken center conductor works fine until the cable is stretched slightly and the broken wire ends are pulled apart. Most reliability problems start with loose or missing screws for the shell ground or cable clamps. These should be checked periodically and tightened as needed. General testing guidelines are similar to those for phone plugs, but there are some different booby-traps to avoid.