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White vertical lines-power supply?
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| mcspooge |
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Posts: 7
Joined: 07 Jan 2008
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Posted: Sat Jul 05, 2008 5:01 pm
Post subject: White vertical lines-power supply?
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Gday Chaps.
I've just got a new peephole camera for my front door(not sure if I can post links?). The brand is KT&C(Pal version).
The problem is a series of white vertical lines going down the screen. The image looks passable in the daytime but as it gets darker the vertical lines become more of a problem.
I did some searching and narrowed it done to a power supply problem.
On the specs of the camera it says:
| Quote: |
| DC 9v-12v 200/300ma regulated power supply |
I have tried a 9v 300ma and a 12volt 1000ma power supply but still suffer the same problem.
How can I tell if the power supplies I have are regulated?
Last edited by mcspooge on Sat Jul 05, 2008 5:05 pm; edited 1 time in total
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| mcspooge |
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Posts: 7
Joined: 07 Jan 2008
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Posted: Sat Jul 05, 2008 5:03 pm
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Just to add:
I am hooking up the camera with a BNC->COMPOSITE adapter.
Is it possible that could cause the problem?
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| mcspooge |
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Posts: 7
Joined: 07 Jan 2008
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Posted: Wed Jul 09, 2008 7:09 pm
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Like tits on a bull round here 
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| minko |
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Posts: 27
Joined: 26 Apr 2008
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Posted: Wed Jul 09, 2008 8:46 pm
Post subject: Re: White vertical lines-power supply?
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| mcspooge wrote: |
Gday Chaps.
I've just got a new peephole camera for my front door(not sure if I can post links?). The brand is KT&C(Pal version).
The problem is a series of white vertical lines going down the screen. The image looks passable in the daytime but as it gets darker the vertical lines become more of a problem.
I did some searching and narrowed it done to a power supply problem.
On the specs of the camera it says:
| Quote: |
| DC 9v-12v 200/300ma regulated power supply |
I have tried a 9v 300ma and a 12volt 1000ma power supply but still suffer the same problem.
How can I tell if the power supplies I have are regulated? |
Well, if you plug it into the wall and it is big and cubical-shaped device, then it is not regulated. It is merely somewhere between 12 VDC and 16 VDC. I doubt that is your problem, but 12 VDC - 300 mA is probably under powering the device and 12 VDC - 1000mA is probably too much power for the device. Since you have the same issue with either Wall Wart, then I think you have another issue.
Running the feed back parallel to an AC Main circuit with skinny Siamese Coax is probably the issue.
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| mcspooge |
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Posts: 7
Joined: 07 Jan 2008
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Posted: Wed Jul 09, 2008 9:15 pm
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| Quote: |
| Running the feed back parallel to an AC Main circuit with skinny Siamese Coax is probably the issue. |
Nope.
Have connected the Camera Directly to the Monitor to rule that out.
Any other ideas??
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| Smit9352 |
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Posts: 254
Joined: 14 Feb 2008
Location: Louisiana
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Posted: Thu Jul 10, 2008 9:00 am
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Where are you located that you had to purchase a PAL version?
Also with the power supply for the camera I know if it calls for 300mA @ 12VDC he'll be fine if the 12VDC@1AMP is regulated.
As far as the problem have you checked your wiring or made sure the camera isn't grounded out on something?
Thanks,
John
_________________
www.cctvimports.com
Come see us sometime!!!
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