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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Shaking picture on a Christie M35

   
Author Topic: Shaking picture on a Christie M35
Frank Dubrois
Jedi Master Film Handler

Posts: 896
From: Cleveland, OH
Registered: Mar 2005


 - posted 05-03-2007 01:12 AM      Profile for Frank Dubrois     Send New Private Message       Edit/Delete Post 
Recently we have had one of our projectors give us a shakey image. It moves back and forth. I have tried to tighten the tension and it does not seem to affect the shaking. There is no noise associated with the problem, just annoying picture on the screen. The sound is fine, both dts and analog play without issue. This started about 2 weeks ago and does it every show and with multiple prints. I thought gate tension would be the culprit, but apparently not. Does that also rule out worn gate bands? This projector had all of its belts/bearings/assemblies replaced about 12 months and has worked perfectly until recently. I have no idea what I need to check into next. Ideas?

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Robert E. Allen
Phenomenal Film Handler

Posts: 1078
From: Checotah, Oklahoma
Registered: Jul 2002


 - posted 05-03-2007 01:40 AM      Profile for Robert E. Allen   Email Robert E. Allen   Send New Private Message       Edit/Delete Post 
What about the lateral guide rollers? Are they smooth and turning freely?

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-03-2007 08:30 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
The ruby slippers that the guides run on eventually do wear and the ends of the lateral guide should be inspected for wear and replaced if necessary and the ruby slippers SHOULD be replaced anyway. You HAVE to have the neato Christie alignment gauge in order to properly set up the lateral guides or you're just giessing and you won't be able to match the position of the two. It is also used to set the lateral guides on the sound head as well. Its under a hundred bucks....

Mark

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