Inspect the fiber-optic cable by following it along its length. Look for bends in the cable, which obstruct the cable’s optical fibers. Gently straighten any unnecessary bends.
Remove any objects resting on top of, or otherwise putting pressure on, the cable.
Check for excess tension in the cable. Fiber-optic cables should have some slack, as tension causes stress on the fibers. Slacken any cables that are pulled tightly.
Shorten cable spans that seem excessively long by placing connected devices closer together and using shorter fiber-optic cables.
Identify any splits, rips or tears in the cable. Replace any damaged cables with new fiber optics.
Locate the point at which the fiber-optic cable connects to a device, whether it be a modem, router, television or other piece of electronic equipment.
Check the connection. If the connection is loose, firmly secure the cable to the electronic device.
Inspect the cable’s connectors. Spray the connector with compressed canned air to remove dust and foreign particles.
Disconnect the fiber-optic cable and reconnect it to the device if simply tightening the connection fails to remedy the problem.
Investigate the point of access for any fiber-optic cable that enters your home from the outside. Remove any foreign elements that could obstruct or place stress on the cable.