Hi! I see you’re experiencing a beeping sound from your Zosi HD Digital Video Recorder along with video loss on the Zosi Smart app. Let’s work through this together to figure out what’s going on and how to fix it.

First, a few questions to better understand the situation:
- Does the beeping happen constantly or only at certain times?
- Is the video loss occurring on all camera channels or just some of them?
- Have you checked whether there are any error messages on the DVR screen or the app?
- Have you recently changed any cables, power sources, or network settings?

In the meantime, here’s a step-by-step plan to troubleshoot the common causes:

1. Check the Alarm Beep Settings on DVR:
- Sometimes the DVR beeps because the “Motion Buzzer” or alarm for video loss is enabled.
- Using your DVR’s remote or connected monitor, navigate to the system menu → Alarm settings → look for an option like “Motion Buzzer” or “Video Loss Alarm” and disable it temporarily to see if the beeping stops.

2. Inspect Power and Connection Cables:
- Video loss and beeping can indicate the DVR is not receiving stable input from cameras.
- Verify all camera power adapters and connectors are firmly plugged in.
- Check the video cables (BNC cables for analog HD systems) from each camera to the DVR, reconnect them securely.

3. Review Hard Drive Status:
- The beeping may also be a warning related to HDD issues (e.g., failure or disconnection).
- Within the DVR menu, check HDD status or storage info. If the drive is not detected or showing errors, reseat the drive or consider replacing it.

4. Network/Smart App:
- For video loss in the Zosi Smart app, ensure your DVR is online and connected via network.
- Restart the DVR and your router.
- Make sure your app is updated to the latest version.
- Re-login to the app, or unlink and re-link the DVR device.

5. Restart Your System:
- Power cycle your DVR and cameras by unplugging the power for 30 seconds and then plugging back in.

If after these steps the beeping continues and video loss remains, it could indicate deeper hardware or software issues, such as firmware corruption or internal faults.

Please let me know how the above checks go or if you see anything specific in the system menu or app. I’ll guide you through further steps based on what you observe.

If you want, I can also share a helpful official article about DVR beeping and video loss on Zosi systems to supplement these steps.

Are you satisfied with this guidance so far?