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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Sat Feb 28, 2009 10:28 pm Post subject: 2.35:1 for a Barco 808s? |
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I can't shrink the raster enough to get 2.35:1...what might I be able to do to get it smaller? Any thoughts?
Ben
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Sun Mar 01, 2009 1:53 am Post subject: |
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From what I can tell...VSIz pots are only for red and blue...not green. THoughts?
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Sun Mar 01, 2009 1:59 am Post subject: |
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Do you mean and run a 2:35 AR from your HTPC?
Mike
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Doing HD since the last century!
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secstate
Joined: 20 Mar 2006
Posts: 720
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| Posted: Sun Mar 01, 2009 3:36 am Post subject: |
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I don't think there is anything you can do. Or rather there probably is something that can be done but it would require figuring out a mod that so far as I know, nobody has.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sun Mar 01, 2009 4:48 am Post subject: |
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I wonder if its something as simple as the Marquees solution of changing three resistors on the VDM. You'd have to look for where the size waveforms come from the barcos control board or where they are generated. So you need to study the service manual and a set of schematics and be willing to be adventurous and willing to take the risk of messing something up bad.
Athanasios
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Gary M.
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| Posted: Sun Mar 01, 2009 5:15 am Post subject: |
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Alan G. at AVS said he easy did 2.40:1 with a pot inside the Runco 1101 unit, I will be doing 1920x800p 2.40:1 with my MP1209s/e this coming week (yay! and thanks Mike P.)
on the other hand this can also be taken care of with porch increases via HTPC or scaler 
how close are you Ben?
-Gary
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Sun Mar 01, 2009 4:50 pm Post subject: |
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How far am I? Quite far...it seems a vsiz of 0 gets me to 16:9.
Something is amuck with this thing...I cannot line up red and green in the convergence grid. But the toe in adjustment has them aligned quite well. Similar thing with blue, it looks good on toe in, but requires lots of adjustments on the convergence grid.
Perhaps my red and blue sizes are wrong (pots?)?
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Mon Mar 02, 2009 1:53 am Post subject: |
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Looks like I don't have a vertical shift pot like the board in the setup section on this site...It's a SEOS board. Am I in trouble here?
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Mon Mar 02, 2009 1:58 am Post subject: |
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| benareeno wrote: | | Looks like I don't have a vertical shift pot like the board in the setup section on this site...It's a SEOS board. Am I in trouble here? |
That was a special board for Curved screens used in Simulators I think, You need to change some stuff out to make it more friendly for flat screen use i believe .
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
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secstate
Joined: 20 Mar 2006
Posts: 720
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| Posted: Mon Mar 02, 2009 2:20 am Post subject: |
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| benareeno wrote: | How far am I? Quite far...it seems a vsiz of 0 gets me to 16:9.
Something is amuck with this thing...I cannot line up red and green in the convergence grid. But the toe in adjustment has them aligned quite well. Similar thing with blue, it looks good on toe in, but requires lots of adjustments on the convergence grid.
Perhaps my red and blue sizes are wrong (pots?)? |
Raster size is adjusted by the three coils on a subboard on the frame or motherboard in an 808. However it adjusts the overall size both h and v. Do NOT adjust with a metallic screw driver while the set is on. Look at the service manual for the directions for adjusting.
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secstate
Joined: 20 Mar 2006
Posts: 720
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| Posted: Mon Mar 02, 2009 2:25 am Post subject: |
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| benareeno wrote: | | Looks like I don't have a vertical shift pot like the board in the setup section on this site...It's a SEOS board. Am I in trouble here? |
If this is a SEOS set all bets are off unless all the mods have been undone.
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Gary M.
Guest
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| Posted: Mon Mar 02, 2009 3:47 am Post subject: |
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Ben, I am not jumping on you, and your situation may prove me to be a idiot, but when the raster was expanded as far as possible on my previous 808s, the vertical size needed for 16:9 ended up around 13
you guys are worrying me here a little, hopefully I won't have any trouble hitting my 1920x800p 2.40:1 needs with my mp1209s/e
-Gary
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Mon Mar 02, 2009 6:17 am Post subject: |
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I'm sure it's all because it was a SEOS. It looks like many boards were swapped already. I think I need the H-shift board....
I can converge it in 16:9, but I'm using way too much adjustment....we'll see if I can figure it out.
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secstate
Joined: 20 Mar 2006
Posts: 720
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| Posted: Mon Mar 02, 2009 4:25 pm Post subject: |
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| Gary M. wrote: | Ben, I am not jumping on you, and your situation may prove me to be a idiot, but when the raster was expanded as far as possible on my previous 808s, the vertical size needed for 16:9 ended up around 13
you guys are worrying me here a little, hopefully I won't have any trouble hitting my 1920x800p 2.40:1 needs with my mp1209s/e
-Gary |
Yep my Data 808s is at 17 V size for 16:9. I wouldn't worry my Runco squeezes down to 16:9 with adjustment to spare.
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Gary M.
Guest
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| Posted: Mon Mar 02, 2009 6:15 pm Post subject: |
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| secstate wrote: | | Gary M. wrote: | Ben, I am not jumping on you, and your situation may prove me to be a idiot, but when the raster was expanded as far as possible on my previous 808s, the vertical size needed for 16:9 ended up around 13
you guys are worrying me here a little, hopefully I won't have any trouble hitting my 1920x800p 2.40:1 needs with my mp1209s/e
-Gary |
Yep my Data 808s is at 17 V size for 16:9. I wouldn't worry my Runco squeezes down to 16:9 with adjustment to spare. |
Miles, what are you hitting for 16:9 with the Runco? I am thinking Runco did change something possibly because Alan G. at AVS had one and said it was easy to hit 2.40:1 height
-Gary
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r.bauer
Joined: 08 Apr 2006
Posts: 280
Location: The Netherlands
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| Posted: Mon Mar 02, 2009 6:36 pm Post subject: |
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| secstate wrote: | | Raster size is adjusted by the three coils on a subboard on the frame or motherboard in an 808. However it adjusts the overall size both h and v. Do NOT adjust with a metallic screw driver while the set is on. Look at the service manual for the directions for adjusting. |
This is not correct. The three coils in an 808 chassis only adjust hor.width.
Regarding V-size adjustment for 2.35 aspect ratio: What Hor-size are you using? Using as much fosfor as possible means you can get away with using more V-size for the sam AR. So proper projector placment is important and if you need to stay within the wear, 2.35 might not be possible.
Also, in general the 808 chassis squeezes its image vertically less when comparing to a 1209s, same as the H-width of a 808 has a much wider range compared to an 1209s.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Mon Mar 02, 2009 7:20 pm Post subject: |
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I am using max phosphur right now...Hsiz is in the 90's.
I need to do vertical shift of red...the toe in cross hairs look great, but the convergence grid tells another story. I have to use max raster shift to get the red and green aligned in the center. And even then, they're not quite aligned.
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