dstanton

Please see pic below, I have this system installed in my store. The camears have been switched off whilst I have been waiting for the UPS to get repaired, today I got back the UPS but when I plugged it all back in 2 of the cameras were like this. One is still perfect but the other two are really dark almost showing a negative. Any ideas? Thanks for the advice.

Yup its the same on any channel if I change it, strangely enough it has ever so slight brightened up over the last 24 hours but still a terrible picture. Any ideas? Thanks.