Originally Posted by kmt2265
I finally got and installed my new iris. It works perfectly, no more rattling sound. The only problem is you see the iris working. The new iris moves alot smoother than old one. Now I have re-calibrate pan. Not a bad fix for $63.00.
I received mine today and got it installed. The only trouble I had was in removing the "analysis case (upper)". Had a hard time getting it out and broke the hold down hook in the process. After I replaced the iris, I fasten down the analysis case at the hook section using two pieces of foil tape on either side of the broken hook. It's not going anywhere.
I understand what you mean now by "moves a lot smoother". My old iris had exactly the same problem. With power off, it wouldn't move freely like the replacement does. Before I got the unit in I wondered if it was the magnet that lost some of it's strength. So for the fun of it I measured the strengths of the old and new magnets and they were pretty close to the same. So the problem appears to be entirely the freedom of rotation of the two shafts. After close examination of the old and new parts they look slightly different on one of the shafts. Probably if I played with it enough I could make the old one move freely again but the new one's installed and all is well again.
I would caution against anyone doing this repair unless you have familiarity with this type of work. If you don't know what you're doing, there are several places you can go astray such as messing up the optics or damaging the delicate connectors.