A video intercom can have a black screen while audio still works because the camera, monitor, wiring, power, network or configuration has a separate problem from the talking function. Do not assume the full system failed just because the picture is missing. Separate what still works from what stopped working.

Check whether the black screen appears on every monitor or only one device. If phone viewing is involved, test whether the app receives calls, whether live view loads and whether the internet connection is active. If an indoor monitor is black but the outdoor panel still calls, the monitor or wiring may be the affected part.

Lighting and camera condition also matter. A covered lens, moisture inside the panel, a damaged camera module or glare can make the video unusable. If the picture fails only at night, the issue may involve lighting or infrared behavior rather than the intercom call itself. Photos of the outdoor panel help explain the site conditions.

Call for service when video stays black, fails intermittently or affects visitor identification. Send screenshots, panel photos, monitor photos and the ZIP code. 770 Doors & Windows can review whether the repair is camera-related, monitor-related, wiring-related or a better candidate for video intercom replacement.