Soc3032

I have an 8 camera system, cables from camera to DVR with BNC connectors. all 8 were working fine then number 8 stopped. unplug 7 and 8 works 8 works solo so does 8 but not at the same time swap cameras between 7 and 8 both work solo but not together. ????? what could cause this?

Neither 7 or 8 work at the same time. 7 works or 8 works whilst the other is black, but shows date and time. unplug any camera to check and they all work but not 7 and & together

I’ll have a look. would that be a problem as they all worked fine for about 6 months? could it be a short if “both are plugged in?” the camera image is black but has the date and time on the top of the screen the same as all the others with a picture.

All run off 1 power supply and 8 way splitter. HDR has its own power. I’ve tried using 1 camera to it’s own power. swapped them all around but 7 and 8 won’t work at the same time