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BrianD73
Joined: 01 Dec 2007
Posts: 9
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| Posted: Sat Jan 26, 2008 5:04 pm Post subject: Constantly shifting picture on Marquee |
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I was trying to set up my new Marquee 8500 projector with a "quick and dirty" focus and convergence to prepare for an open house. The plan was to then re-focus and re-converge carefully later to get the best picture possible. At the start of the process I noticed that the picture was shifting back and forth constantly. The whole image would shift an inch to the right, then it would shift an inch to the left, then it would shift up, then down, etc. The picture wasn't constantly in motion, rather it would pause for a second or two and then shift again. I didn't get any weird focus problems or color shifting during the shift, so I'm guessing the problem is before the tubes. Anybody have any thoughts on what may be going on?
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sat Jan 26, 2008 5:26 pm Post subject: |
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Hello
Does the 8500 have an Image Shifter card installed?
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BrianD73
Joined: 01 Dec 2007
Posts: 9
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| Posted: Sat Jan 26, 2008 5:44 pm Post subject: |
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| Tim in Phoenix wrote: | Hello
Does the 8500 have an Image Shifter card installed?
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That will probably be a question for Curt to answer. I got the projector from him a few days ago configured in what I am assuming is his default configuration. If my setup matters, I've got a DVD player (not sure the brand) connected via component into a Denon 2308CI receiver connected via HDMI to a HDFury (with EDID fix to allow it to work with Denons) connected via RGBHV to the projector. The image also shifts if I am looking at internal test patters and on-screen menus.
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Gino
Joined: 22 Apr 2006
Posts: 1363
Location: Trinity Beach, AUSTRALIA
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| Posted: Sat Jan 26, 2008 11:10 pm Post subject: |
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I believe you can actually see the image shifter card, it's normally next to your VIM (rgbhv connectors on rear)
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BrianD73
Joined: 01 Dec 2007
Posts: 9
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| Posted: Sun Jan 27, 2008 3:58 am Post subject: |
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If I can figure out what I am looking for, I'll check it out. Is the purpose of the image shifter to constantly shift the image (sort of like I described) to prevent burn-in? Seems like that wouldn't be necessary for a movie projector. What would be the best way to address this?
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Sun Jan 27, 2008 4:34 am Post subject: |
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| Gino wrote: | | I believe you can actually see the image shifter card, it's normally next to your VIM (rgbhv connectors on rear) |
I thought that was the Colour Correction Module. next to the Acon board.
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BrianD73
Joined: 01 Dec 2007
Posts: 9
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| Posted: Sun Jan 27, 2008 6:50 pm Post subject: |
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I understand now why the question was asked about the image shifter card. There is one installed and I had my video plugged into it. I moved the cables over to input 1 which wasn't on the card and everything is great.
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sun Jan 27, 2008 7:03 pm Post subject: |
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Hello
There are movable jumpers on the card, you can turn the shifter function off if needed.
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Sun Jan 27, 2008 7:05 pm Post subject: |
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Are you talking about the second input card?
Confused...
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sun Jan 27, 2008 7:08 pm Post subject: |
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Good call Tim, there is indeed an orbiting card installed in that set. Funny, I have a pile of those, so I put them in a lot of sets that I sell in place of the blank panel, and never thought that it could be the issue..
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sun Jan 27, 2008 7:41 pm Post subject: |
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| Joust wrote: | Are you talking about the second input card?
Confused... |
Yes, the version called Image Shifter; it has some small knobs above the BNCs.
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Gino
Joined: 22 Apr 2006
Posts: 1363
Location: Trinity Beach, AUSTRALIA
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| Posted: Mon Jan 28, 2008 1:59 am Post subject: |
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| Joust wrote: | | Gino wrote: | | I believe you can actually see the image shifter card, it's normally next to your VIM (rgbhv connectors on rear) |
I thought that was the Colour Correction Module. next to the Acon board. |
No, I meant where the second input module slots in, well IIRC that's where mine was until I tossed it.
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