Possible it’s just worn out if it had been doing a lot of tracking and/or had pans or patrols set for long durations (months at a time). They do have some unknown to me limit.
I’ve never had one go dead. I’d try a factory reset first, assuming you’ve checked settings thoroughly
it zooms, tilts pans and auto focuses fine, it moves between setpoints as schedule fine. the camera is only about a year old and I tried a reset but with keeping it's ip