Johnny45 0 Posted February 9, 2012 I have a sentinent cctv system. It has 4 cameras. When i turned it on first it worked good. I turned it off and when i turned it back on a few days later it said "no signal" on the monitor. I cannot get a picture on it. Would anyone know how to sort this??? it goes to sleep after a few seconds. Thanks guys Share this post Link to post Share on other sites
SPLATNESS 0 Posted February 10, 2012 Get a voltage meter and test the power suply for the cameras, recheck all your connections Share this post Link to post Share on other sites
Johnny45 0 Posted March 2, 2012 all the connections are good. no problem with power to cameras. any more suggestions please??? Thanks Share this post Link to post Share on other sites
tomcctv 187 Posted March 2, 2012 "no signal" sounds like your dvr has lost its auto detect. power your DVR off then hold down the right arrow button switch DVR back on while still holding button and you should see your monitor start THIS is for a VGA monitor if you are using comp out to a tv do the same but with the left arrow button. Share this post Link to post Share on other sites
