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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Wed Nov 25, 2009 3:28 am Post subject: |
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Is this the return of a working board? Or jus to test it?
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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: Wed Nov 25, 2009 3:32 am Post subject: |
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Just to test it. Repairs are a flat rate of $250 incl return shipping. That includes testing of the defective board of course.
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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Wed Nov 25, 2009 11:49 am Post subject: |
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Curt,
How much is a used working controller?
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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Wed Nov 25, 2009 6:11 pm Post subject: |
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Willima the guy I bought it from suggested that I rotate the yokes 180 and it would fix it.
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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: Wed Nov 25, 2009 6:53 pm Post subject: |
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I don't have a 1209s controller in stock, so I'd need to repair yours. While you can rotate the yokes, that's working around repairing the actual problem. If the controller has one fault, it might develop others, and in theory could cause problems with the tubes, so I wouldn't risk it.
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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Thu Jan 28, 2010 2:37 pm Post subject: |
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I have a new problem. With pj mounted and projecting. I can't get it to focus at the top and bottom with the middle focused. The top of the screen is at the ceiling. It is a 72x96 screen. I focused the top portion and then with a piece of paper went to the middle and pulled the paper forward and at 12" away from the screen the middle is focused. I repeated the above at the bottom and it was 24" away from screen to be in focus. This tells me that if focused in the middle of the screen the top of my screen would have to be 12" back from where it is and the bottom of my screen would have to be moved forward 12" to be in focus. Open for any ideas to correct this problem. The front corner of my pj is currently at 6' off of the floor. The only thing I think that I could try would be to rotate the whole tube with mounting 180°. Maybe there is tilt in the mounting and this would flip the tilt. There is room in my case to do this.
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jantje112
Joined: 17 Jul 2006 Posts: 328
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| Posted: Thu Jan 28, 2010 3:15 pm Post subject: |
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Your projector is a placed a little off axis That causes the focusproblem..
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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: Thu Jan 28, 2010 3:17 pm Post subject: |
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Studio called me yesterday on this. This is a SEOS projector, and while all the 'standard' 1209s chassis that I've seen that are SEOS have enough Scheimpflug adjustment on the lens assemblies to correct for curved screens, my guess is that the lenses in this unit were shimmed with relation to the LC housing, so I think the tubes need to come out and be unpotted, the shims need to be removed, and the tubes need to be installed as a normal 1209s is, without shims.
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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Fri Jan 29, 2010 2:32 am Post subject: |
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Just curious if anyone close to Tulsa, Oklahoma?
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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Sun Mar 14, 2010 10:11 pm Post subject: |
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I finally lowered my pj to the midpoint with my screen just to find out if I have a focus issue. With the electronic focus in the different zones of focus on the screen should I have the same amount of adjustment in the middle as in the edges? When I focus in the center zone I have quit a bit of adjustment, that is visibly. In the other zones their is a 0-99 scale but I can not see any changes on the screen. Could this be because it might not have been put back to a Barco completely? What board would control weather a function works or not?
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secstate
Joined: 20 Mar 2006 Posts: 720
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| Posted: Mon Mar 15, 2010 8:08 pm Post subject: |
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| studio wrote: | | I finally lowered my pj to the midpoint with my screen just to find out if I have a focus issue. With the electronic focus in the different zones of focus on the screen should I have the same amount of adjustment in the middle as in the edges? When I focus in the center zone I have quit a bit of adjustment, that is visibly. In the other zones their is a 0-99 scale but I can not see any changes on the screen. Could this be because it might not have been put back to a Barco completely? What board would control weather a function works or not? |
If you are using the Barco built-in patterns these these don't show much difference except at center. I have found I prefer to use a displayed pattern showing alternating 1 pixel black and white lines. This will show a difference but I have to be pretty close to the screen to see it. That is how I adjust electronic focus.
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-Pjackso
Joined: 31 Mar 2006 Posts: 791 Location: Oklahoma
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| Posted: Mon Mar 15, 2010 9:11 pm Post subject: |
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Hi Studio,
Nice to see another Oklahoman here! I'm in OKC, not Tulsa.
I have a BG808, but unfortunately I have very little repair experience on Barco’s - so I can't help.
Best of luck.
_________________ -Nothing relevant to add.
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jkruger
Joined: 24 Oct 2007 Posts: 2435 Location: Carlsbad, CA
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| Posted: Mon Mar 15, 2010 11:34 pm Post subject: |
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I see that your lenses are mounted rotated 180 degrees from the way the ones on my 1209s are. I don't think that would be the problem but it might be easy enough to try rotating them and see if it helps. Mine is mounted very much the opposite of the way yours is, the lenses are at about a 3 degree angle to the screen.
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secstate
Joined: 20 Mar 2006 Posts: 720
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| Posted: Mon Mar 15, 2010 11:52 pm Post subject: |
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| jkruger wrote: | | I see that your lenses are mounted rotated 180 degrees from the way the ones on my 1209s are. I don't think that would be the problem but it might be easy enough to try rotating them and see if it helps. Mine is mounted very much the opposite of the way yours is, the lenses are at about a 3 degree angle to the screen. |
Sharp eyes! His set is a an old SEOS set so that might also account for the oddity. They mounted the CRTs all kinds of crazy ways. Including a vertical "stoplight" pattern. Still it wouln't hurt to try. SEOS modded each set based on its use so it is really hard to know going in what you might need to undo. The later the projector the fewer the mods (I guess the plain old Barco projectors got more flexible over time). From what I have heard, not seen one, the SEOS 909s are essentially stock.
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jkruger
Joined: 24 Oct 2007 Posts: 2435 Location: Carlsbad, CA
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| Posted: Tue Mar 16, 2010 12:31 am Post subject: |
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I think the mounting angle is the problem. Way too high in the rear.
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jkruger
Joined: 24 Oct 2007 Posts: 2435 Location: Carlsbad, CA
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| Posted: Tue Mar 16, 2010 12:35 am Post subject: |
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Oh Crap... I've ruined another thread...
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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Mon May 03, 2010 12:01 am Post subject: |
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I curious, my focus assembly on the tube is bumping the magnets assembly, is there a way to move it back more. It is almost as sharp as possible but I don't know because it hits. Any suggestions?
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Ile
Joined: 09 Mar 2006 Posts: 1491 Location: Jyväskylä, Finland
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| Posted: Mon May 03, 2010 7:42 am Post subject: |
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Magnets can be moved back, but neck board clamp will still be in a way.
You need to make focus adjustment, when center focus is set to 57.
But this is not your problem, it's mechanical.
Does your lc-hardware even have adjustable Scheimpflug?
Maybe they used cheaper 1200/1209 style lc hardware with constant chambers, because projector is build for zero angle.
Actually your hardware looks like black, like constant chambers in 1200/1209.
Check my attachment...
Is there 00-05 screws and securing screws in your hardware?
If those are constant hardware, you can make a test. Add needed amount of washers (check with lens program) between lens and c-element. Same thing if you have adjustment, but it don't have enough range. This is not best way to do Scheimpflug, but test how it works...
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studio
Joined: 24 Mar 2006 Posts: 191
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| Posted: Mon May 03, 2010 11:51 am Post subject: |
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Ile,
What is the best test pattern or method to really dial in the focus? Did you see my post on the official screenshot thread. My pj is set at 5 degrees currently. I have pretty good focus from top to bottom. One of the things I noticed in focusing in the middle is that as I go in and out of focus is that the vertical line vs the horizontal line changes. As I go in one direction with the electronic adjustment in affects the vertical lines if I cross over and go the other way is affects the horizontal??? [/img]
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Ile
Joined: 09 Mar 2006 Posts: 1491 Location: Jyväskylä, Finland
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| Posted: Mon May 03, 2010 12:26 pm Post subject: |
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| studio wrote: | | What is the best test pattern or method to really dial in the focus? Did you see my post on the official screenshot thread. My pj is set at 5 degrees currently. I have pretty good focus from top to bottom. One of the things I noticed in focusing in the middle is that as I go in and out of focus is that the vertical line vs the horizontal line changes. As I go in one direction with the electronic adjustment in affects the vertical lines if I cross over and go the other way is affects the horizontal??? |
It look like that those chambers have Scheimpflug adjustment.
Are raster place chancing when you adjust electric focus? If so, astig magnets need adjustment and that could cause chances in H/V lines.
I have been using Phillips test pattern generator (pc software) 1:1 pixel for my focus adjustment.
http://www.benchmarkhq.ru/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=269&g2_serialNumber=4
I use this procedure for full tube adjustment. Last two pages.
http://www.curtpalme.com/docs/BarcoGraphics808s_CRTReplacementProcedure.pdf
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