* "Had the camera broken" is correct in the past perfect tense. It means the camera was broken before another event in the past. For example: "Had the camera broken before the trip, we wouldn't have been able to take any pictures."
* "Was broken" is correct in the past simple tense. It means the camera was broken at a specific time in the past. For example: "The camera was broken when I bought it."
To determine which is correct, consider the context and the intended meaning.