What if you accidentally changed the resolution of your Zosi DVR or NVR and now nothing shows up on the TV/monitor? This issue happens when the resolution of the Zosi DVR is not supported by the TV, instead of a picture you get the “out of range” message or simply a black screen. Sometimes it even says “no signal”.
Technically, the out of range issue is caused by a resolution compatibility issue. The default output resolution of the DVR is 1024*768, which may not be compatible with some screens.
Also, certain types of TVs or monitors are not able to auto switch among the available resolutions to find the one that matches.
Note: Make sure you’ve selected the right input source using your remote control. The input source is the feed coming from the HDMI port. For example if you’re connecting the DVR to HDMI 1, you need to choose input source HDMI 1 on your TV (via the remote control or the side buttons).
How to fix out of range issue on a Zosi DVR
Step 1. Connect the DVR to any other screen via VGA cable (or you may also try any another screen via HDMI to see if you can enter the menu)
Step 2. When you are able to see the menu, click the right button on the mouse then go to Main Menu > Setup >Basic > Video Output. Change it to 1024*768 or any higher resolution that your screen can support. Click Apply to save the settings.
Step 3. Connect it back to your primary screen via HDMI. After that, you should be able to see your DVR’s picture on the monitor/TV.
