Sagz77

Update, I connected 1 camera to the power supply, crystal clear images back to normal. Connected 2 and okay, 3 and okay, as soon as forth one connected all went grainy. So looks like the power supply is down to its last leg and needs replacing?

Thanks Tom, yes it's definitely PAL. Also attached the pic of the power supply, I had to replace this back in 2018 and got one off Amazon been working fine. Also unplugged each one, connected a few to the spare channels (it'd 8ch) but same issue throughout.

Hi All, Iv got 5 Qvis dome cameras installed about 7 years ago, connected to a Qvis Pioneer 8ch dvr. No problems so far, until last week when suddenly all 5 cameras have a grainy picture, worst at night when you can barely see anything, literally pitch black. Restarted Dvr, checked hard drive connection and formatted, checked ethernet connections, all look okay. Same issue on App and Monitor connected via hdmi. Just to add its connected via powerline adaptors with ethernet, so I disconnected them in case of interference but same issue. All 5 cameras going simultaneously sounds very weird. Could this be a Dvr issue perhaps and it's hit its last legs? I'm baffled any help would be appreciated. Thank you