PROJECTOR GHOSTING
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- čas přidán 21. 08. 2024
- In 2002 After a service a projector had Ghosting on the picture. Ghosting is streaks of white light showing on the screen. This happens when the timing is wrong between the shutter blade and a 35mm film frame when they are not in sync with each other. Very interesting video.
- Zábava
The Vic 8 was also known for Ghosting at a lot of installations I had seen. The Westar Projector there was a knob on the front to tweak the Shutter timing.
Hi Fred, it's me again. I found that the worst offender for ghosting was the Vic 5. The main issue was the B belt tension, slightly too loose and you would get a fluttering ghosting normally from the bottom of the frame. Easily fixed however, simple re tension the B belt correctly.
I used a blacked-out frame with clear racking lines, this very clearly showed up any ghosting, and could easily be raked up and down to test the top and bottom.
Hello MIke, Good to hear from you. I only ever did relief working with Vic 5's, but I understand completely what you are saying. You must have installed so many of them over the years. I like your blacked-out frame for your Ghost check. My favourite machines were the Vic 8, Vic 10 of which we had 2 at the Odeon Haymarket, and of course the DP70 of which we had 3 at the Empire L/Sq. Always good to hear from you. Take care. All the best.
that was great. i love to figure out problems and be able to fix them. I had my shutter apart so I can relate. I spotted so much in this vid. I see they run the exact same lamp I run. I also spotted the CAT689 on the wall which are very hard to find now. I must ask you about what they put on the shutter shaft. the round white unit with the wire coming out looks to be an encoder. never seen that before. (I see them on cnc machines). Thanks Fred.