What causes intermittent signal loss (flickering video)?

Intermittent faults are usually caused by Cable Fatigue (broken copper strands inside the insulation) near the connector boot. To diagnose, perform a Continuity Test with a multimeter while wiggling the cable at the boot. If the beep stops or resistance jumps, the internal conductor is broken.

Copper work-hardens and breaks over time.

Flex Failure: This happens if the cable was bent too sharply or pulled repeatedly.
Contact Fretting: It could also be due to loose contacts (worn-out spring sockets). Check if the male pin feels loose when inserted.
Solution: A broken internal wire cannot be fixed reliably. The cable must be re-terminated (shortened) or replaced.

John Zhang

(CEO & Lead Engineer)
Email: info@hysfsubsea.com
With over 15 years of expertise in subsea interconnect technology, I lead HYSF's R&D team in designing high-pressure (60MPa) solutions. My focus is on ensuring zero-leakage reliability for ROVs, AUVs, and offshore instrumentation. I personally oversee the validation of our custom connector prototypes.

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