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Joined: Jul 2003
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hello guys i had a customer call me wanting me to help with the security cameras. i dont know much about them and mostly cleaned lens and did some adjustments, focus, and replace a connector. anyway some of them dont work. they run on coax cable with a second cable for power. when i unplugged one of the cams two that werent working came up. when i reinstalled the cam the other two went off again. i traded it with another cam and it still cut off the other two. anyone know what would cause this. they seem to run to a computer of some type. not sure of the brand. thanks dave
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Joined: Dec 2005
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seems like either a bad port or termination. I would start by reterminating the camera that is causing the the other two to go out. Also if you move that camera to a different port does the trouble follow?
I Swear I did not touch anything 
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Joined: Apr 2006
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The power supply may be over loaded with too many cameras or it may just be weak and needs replacing.
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Joined: Feb 2007
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It could also be a bad camera causing multiple inputs on the DVR to not work.
I would disconnect ALL the cameras from the DVR and connect them one by one. Find which one(s) cause video loss.
Then determine if the problem is camera, connector, or cable.
The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence - Charles Bukowski
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Joined: Jul 2003
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im going out there tomorrow. thanks for the input. dave
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