Tony4147 0 Posted December 25, 2022 A few months ago I bought a house with CCTV installed and I know very little about CCTV and have no manuals for the system. The DVR has stopped working on both the monitor screen that is connected to it and the explorer app on my iPhone. A reboot of the system makes no difference, all I have is a blank monitor. There is a blue flashing light on the front of the DVR. The unit is an Oyn-x but there no name all I have is the following information - Oyn-x item code 4X5-5 1TB Model code 4X5-4BB 5 in 1 unit 1 SATA 4ch without I/O Can anyone advise what else to check as a reboot makes no difference or recommend a compatible replacement DVR as I think this one is broken? Share this post Link to post Share on other sites