Troubleshoot a Boot Failure or Rebooting issue of a Recorder (DVR/NVR/NVW) – Swann

If you your Swann recorder (DVR, NVR, NVW or wireless recorder) is experiencing the below issues, then your unit may have a boot failure problem:

Check the Output rating or the red tag label attached to the switching Power Adapter (PSU).
- Power rating - the common output rating for DVR PSUs is 12V / 2A (2000mA) and 12V / 1.5A - 3.75A for NVRs depending on the model of the recorder. Note: Some of the older DVR PSUs use 12 V / 3A and 48 V / 5 A for NVR. For a list of Power Adapter (PSU) ratings appropriate for your device, please check this What power adapter should I use article.
- Red tag label - most of the power adapter included has red sticker along the power cable to indicate its use (e.g. DVR/NVR or Camera).

Plug to a wall outlet - to eliminate possibility of faulty extension cable or UPS.

Unplug some cables - if you have an Ethernet cable or cameras already connected, disconnect them for the meantime. Only leave the power plug and monitor connected.
Secure connection - ensure that the power plug is connected securely to the recorder and not loose.
Note: Some of the older NVR PSUs use a larger Barrel plug.
Turn on the recorder - some units may have power switch at the back. Ensure that it is switched ON.
For DVR and NVW-800/AllSercure 650 units, if the NO power issue still persists, swap the camera PSU with the recorder to isolate problem. Check this article for the guide.
- Note: This is for testing purposes only. Do not continue to use the camera PSU if the output rating is less than 2A.

Note¹: If the recorder remains turned Off, check if the wall outlet where the Power Adapter (PSU) is plugged in has power.

Note²: If the recorder turned On but seeing a black screen, consider checking if your monitor support the correct screen resolution by following this guide - Video Mode Not Supported or Signal Out of Range or No Signal.

Swann Help Center