HD-SDI input signal loss on Sled when BNC connector is fully locked

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2013Sled forum

13 years old. Gear and prices may have changed since.

Signal appears when a BNC cable is inserted but not fully locked, but disappears once the connector is twisted into the locked position.
The issue can be caused by a loose chassis-mounted BNC receptacle where internal wires may short against each other when the connector is fully seated.
Testing with multiple BNC cables and direct camera-to-monitor connection can help isolate whether the problem is in the receptacle rather than the cable.
A loose BNC receptacle nut can sometimes be tightened and secured with nail polish to prevent future loosening.
In some cases, the HD-SDI cable itself within the equipment may be faulty and require replacement rather than the external receptacle.

The original poster's specific issue was resolved by replacing an internal HD-SDI cable rather than by adjusting the BNC receptacle, suggesting diagnosis must consider both external and internal cable integrity.
Advice about tightening the receptacle nut did not resolve this particular case.