power supply problem

[Gesualdo 0]

Help! I have A Dahua DVR with 5 HDCVI cameras attached that suddenly lost all images. The cameras are powered by a 12v 10A power supply with 8 way splitter. I changed the power supply and 2 cameras came back. 2 cameras plugged in causes the power supply to blink. Tested the video input on the DVR by plugging a working camera into into each channel and it works on each. No DVR fault that I can tell. The 3 non-working cameras do not display even connected to independent power supply. Are the cameras fried or insufficient power from new power supply? Datasheet_2MP_HDCVI_Starlight_Varifocal_Bullet_A22DFAZ_v001_003.pdf

[tomcctv 190]

On 12/26/2024 at 6:06 PM, Gesualdo said:

powered by a 12v 10A power supply with 8 way splitter.

Hi. This is the wrong way to power cctv cameras ….. infact one faulty camera can damage all the rest

first thing to do is install a suitable power supply the type that protects each camera with its own fuse or electronic cutout something like this 

https://www.amazon.co.uk/HAILI-Output-Supply-Switch-Distribution/dp/B07SV1W15G/ref=asc_df_B07SV1W15G?mcid=ea352f6f096735d1909f4ed7427c5755&tag=googshopuk-21&linkCode=df0&hvadid=696451130813&hvpos=&hvnetw=g&hvrand=15917231825901991530&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9046494&hvtargid=pla-826178894569&psc=1&gad_source=1#immersive-view_1735407912808

[Gesualdo 0]

 Can this be set on the floor in a closet or does it need to be mounted? overheating issue on carpeted floor? found US supplier

 

[tomcctv 190]

On 12/29/2024 at 8:04 PM, Gesualdo said:

 Can this be set on the floor in a closet or does it need to be mounted? overheating issue on carpeted floor? found US supplier

 

Hi it can be just sat on the ground but it only takes two screws to secure to a wall just to stop it being moved … your existing power supply (12v 10amp) with splitter would be running hot the one I listed won’t