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Thread: cctv camera issue

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    Junior Member Playbox's Avatar
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    Default cctv camera issue

    I have a camera on side of building that is faulty,

    can not acces the cabling, so did a chop of cable,

    only 3 wires (white) (red) (earth)

    new camera has for wires 2 for video, 2 for power.

    so i joined the earth for video and earth from power. to the earth on the wall cabling, yellow from new cam to white wire ,and red to red.

    but no go. any ideas ?

    thank you.



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    Sounds like the old camera was a bullet / pencil style camera is this correct ?

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    Senior Member bss904's Avatar
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    have you measured voltage on the cable ?
    Did you power down the camera supply b4 cutting/baring any of the cables ?
    What votage does your new camera require ?
    Did you test your new camera on the bench b4 trying to install outside ?
    Does the camera specs you have match what is required for the installation ?

    You don't give enough details to give any exact advise so you will need to go and check all of the basics first.

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    ^^^^ what he said

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    i just had to replace some connections on one i have and it also had the 4 wires but the white one was for nothing it was actually not connected to anything on the cam itself.

    so it was

    red = power

    black = ground

    yellow = video

    white = zip

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    When you say, yellow = video

    Can you explain further ?

    The cable that you are terminating on, is it RG59 and a seperate power cable?
    If unsure, attach a photo!

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    Quote Originally Posted by keef82 View Post
    When you say, yellow = video

    Can you explain further ?

    The cable that you are terminating on, is it RG59 and a seperate power cable?
    If unsure, attach a photo!

    No keith, If you actually pull a camera apart you wont find COAX rg59 or rg6, mate you will find tiny wires

    Red is +

    Black is common (ground)

    Yellow is video and

    white is Audio

    you link the common (neg) and the sheild of the coax together and it will work

    so yes YELLOW is video

    Haven you ever looked at some rca leads mate???
    Where did you go to alarm school???

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    Junior Member Playbox's Avatar
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    Quote Originally Posted by bss904 View Post
    have you measured voltage on the cable ?
    Did you power down the camera supply b4 cutting/baring any of the cables ?
    What votage does your new camera require ?
    Did you test your new camera on the bench b4 trying to install outside ?
    Does the camera specs you have match what is required for the installation ?

    You don't give enough details to give any exact advise so you will need to go and check all of the basics first.
    yes, and it still works now, New camera works fine on the bench. the issue is that the new camera has the 4 wires / 2 for video / 2 for power.

    but what i need to contect to only 3 wires.

    voltage reading is okay 12vdc 500ma.

    cheers.

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    Cool

    Is the original cable coax & fig 8 or is it 4 core sheilded. Disconnect the internal end & identify what the power is on & what is going to the mon/recorder. It seems easy to me.

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    Quote Originally Posted by watchdog View Post
    Is the original cable coax & fig 8 or is it 4 core sheilded. Disconnect the internal end & identify what the power is on & what is going to the mon/recorder. It seems easy to me.
    sorry not expaining myself,

    the orginal cable is as you say coax plus fig8 but all i can access was the cable going into the old camera , i cut this expecting to see 4 wires but only 3 exisit, so the 1 x earth must be for the video and power.

    new camera has as we expect 4 wires, my thing was to join the 2 x neg wires with the 1 x earth.

    does not work.

    opened old camera and the 3 wires go via a IC then back to 4 inside the camera.

    so looks like i need to knock part of the brick work to get to the full cables after all.

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    Have you thought to test the cable your connecting to?
    12v on power?
    RG59 (coax) tested for an open/short circuit?

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    Senior Member bss904's Avatar
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    Quote Originally Posted by Playbox View Post
    sorry not expaining myself,

    the orginal cable is as you say coax plus fig8 but all i can access was the cable going into the old camera , i cut this expecting to see 4 wires but only 3 exisit, so the 1 x earth must be for the video and power.

    new camera has as we expect 4 wires, my thing was to join the 2 x neg wires with the 1 x earth.

    does not work.

    opened old camera and the 3 wires go via a IC then back to 4 inside the camera.

    so looks like i need to knock part of the brick work to get to the full cables after all.
    Why don't you attach a picture.

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    Quote Originally Posted by Security-Tech View Post
    No keith, If you actually pull a camera apart you wont find COAX rg59 or rg6, mate you will find tiny wires

    Red is +

    Black is common (ground)

    Yellow is video and

    white is Audio

    you link the common (neg) and the sheild of the coax together and it will work

    so yes YELLOW is video

    Haven you ever looked at some rca leads mate???
    Where did you go to alarm school???
    Wow, thanks for that response, i was trying to determine exactly what type of camera was being used, once again. Thanks for pointing out the obvious.
    No need to be so rude & arrogant.

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    Quote Originally Posted by bss904 View Post
    Why don't you attach a picture.
    I asked that same question, i think Security Tech is the man to solve this one.
    Clearly the alarm school i attended isnt to his standards :P

    No point trying to solve the problem until we know exactly what type of cabling is in place.

    What are your thoughts Security Tech ?

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    By the sound of it I think he may still go to school Keef

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    Rofl

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