I am, I believe, having this iris problem - constant, almost "failing fan"-like sound, but the service menu says all the fans are fine... I am planning to simply disable the servo (as mentioned above), especially since I have never liked seeing the iris adjust itself. My question is whether anyone noticed a brightness shift associated with the failure/disabling/replacement of the servo. On my machine the commencement of the noise coincided with a noticeable loss of brightness. I replaced the bulb, to no avail. So I guess I am hoping that disabling the servo will get the iris wide open/maximum bright again. Thoughts?
Went in and unplugged the iris, as described above. fixed the noise but picture still dark. I think this is because the iris is stuck in whatever position it was in when it failed. I'm curious if anyone could speak to whether the iris can be opened/closed manually, and how much of a PIMA this would be, i.e., would it be any easier than just replacing the iris straight up.