- Solutions: Clean connectors and end faces using specialised cleaning tools and solutions, inspect cables for bends or breaks and replace damaged sections, ensure compatibility and proper alignment of fibre optic components. Despite their robustness, fiber networks can fail due to: Physical Damage : Cuts, bends, or contamination in fiber cables or connectors. Hardware Failures : Faulty transceivers, switches, or routers. Environmental Factors :. Take care of the basics These are the basic things you should do first, in the order below or in whichever way that's convenient. You can also do just one or all of them until the issue is fixed. Specifically, locate. Faulty Connections: Loose or mismatched connectors, or a worn-out fiber optic adapter, can cause intermittent or total loss of connectivity 1 4. - Symptoms: Gradual decrease in signal strength over long distances.