barsecurity

So I am having a similar problem. I have several cameras hooked up to a 9ch power supply. And the cameras tend to not display mostly at night, while the IR remain on, and then start displaying again a signal in morning. The connection I checked and confirmed they are all ok. The only thing I can think of is the power supply I am using is 110v and I am using a proper transformer to convert it to 220v (Europe). May this be am issue, or there can be something else which is causing an issue?