I have just had a Swann CCTV installed.
Everything was fine for a mere 6 hours, until one of the cameras had video loss and
in some cases just very dark view.
I took the power connections from the back of the DVR, which enabled the one camera to shock back to life for 30 secs. Next day I tapped the camera and the camera worked for 4 hours before again reverting back to video loss.
Is this a faulty camera or could there be anything else?