ST-C5V-300: Monitor sometimes loses sync, causing it to go blank for a second or two.

Issue: Monitor sometimes loses sync, causing it to go blank for a second or two.

Cause: Electrical power system is very noisy; particularly the ground.

Solution: Ensure the interconnection cable is not near any power lines.

OR

Cause: The CATx cable is not properly connected.

Solution: Check cable connections. Ensure cables are properly and completely snapped-in.