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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Sat Nov 01, 2008 10:10 pm Post subject: |
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| Curt Palme wrote: | | Your astig board or astig adjustments could be bad too. What do your astig dots look like? |
IIRC, the dots wont become round in certain areas on the green, I would have to check again to be sure of that. Could swapping the astig cables confirm a problem with the astigmatism board?
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Sat Nov 01, 2008 10:16 pm Post subject: |
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With the focus controls switched between green and blue, does the green focus control affect the blue tube as you would expect it to ?
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Sat Nov 01, 2008 11:31 pm Post subject: |
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| Elaine Benes wrote: | | With the focus controls switched between green and blue, does the green focus control affect the blue tube as you would expect it to ? |
The blue focus control affects the green but it still wouldn't come into focus in the same certain spots, left side, upper left, some on right side, a bit on top, bottom slightly.
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Sat Nov 01, 2008 11:39 pm Post subject: |
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does the GREEN focus control affect the BLUE tube as you would expect it to
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Sun Nov 23, 2008 6:48 pm Post subject: |
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| Elaine Benes wrote: | | does the GREEN focus control affect the BLUE tube as you would expect it to |
I would assume it would, since the reverse was occurring during the swap.
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Sun Nov 30, 2008 7:48 pm Post subject: |
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Bump...
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Sun Nov 30, 2008 8:40 pm Post subject: |
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As you assure us the optical focus is fine, you either have a bad F-drive or A-drive.
If you won't fix it, we can't help you.
Send the boards to Curt for testing.
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Mon Dec 01, 2008 3:08 am Post subject: |
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| Mark_A_W wrote: | As you assure us the optical focus is fine, you either have a bad F-drive or A-drive.
If you won't fix it, we can't help you.
Send the boards to Curt for testing. |
If I swap the blue and green A-drive and its fixed, can I just leave it like that since blue is defocused anyway?
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Mon Dec 01, 2008 3:15 am Post subject: |
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I would do that for testing.
I guess, it wouldn't hurt to leave it that way.
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Mon Dec 15, 2008 12:00 am Post subject: |
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Swapping F and A drives did not solve problem. It's blurry in the upper left corner and left side. Text in that region at 720p is unreadable.
Still trying to fix this.... Could it have anything to do with astig magnets?
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Mon Dec 15, 2008 12:47 am Post subject: |
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Are you using "maximized" rasters ? Or are you setup at factory spec distances ?
If you are using "maximized" rasters, can you get a completely focused image if you reduce its size ?
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Mon Dec 15, 2008 1:20 am Post subject: |
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Sounds mechanical.
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jarseneau
Joined: 06 Nov 2007
Posts: 323
Location: WI
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| Posted: Mon Dec 15, 2008 5:17 am Post subject: |
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When you adjust the left or right focus (by pressing the focus button and then CTRL+right/left arrow) are you seeing any change at all in the corresponding area? In my experience, when a Focus or Astig board is bad, you will see no adjustment change at all as opposed to seeing a limited change.
With RED or BLUE, are you able to see focus and/or astig changes in the area that do not work on the green. I'm assuming you are seeing normal operation on those or they look fine as they are and you may not have checked if they indeed adjust.
You might also check that the boards in your unit are compatible. Each board has an ink stamp (like 2UJ-xxxx) The other series board may work but with some odd result such as you are getting so it's worth checking. I would check this on your A and F drives and at least on your system board. The first 3 letters of the code should match across your boards.
_________________
Jerry
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Thu Dec 25, 2008 2:27 am Post subject: |
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My rasters aren't maximum I don't believe, there's at least 1/2" or more on the left and right side of the image on tube faces. Is that the amplitude adjustment? I would have to move the projector back to use a smaller raster, which is impossible due to the wall it's up against.
Adjusting the left and right focus seems to yield small changes in focus but it never becomes clear on the left side///upper left corner. I can see on the tube face looking into the lens that its out of focus in that area. I can check the boards later to make sure they are all matching.
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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 Dec 25, 2008 2:32 am Post subject: |
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I haven't read all of the above posts, but here's what I've found in the past:
1) Look into the lenses at the tube face. See if that coarse focus pot in the card cage will bring that corner into focus, even if the rest of the tube face is out of focus completely. If by some means you can bring that corner into perfect focus, no matter what the astig or focus settings are at, and no matter what the rest of the tube face looks like, then the problem is electronic within the set.
2) If you cannot bring that corner into focus at all, then I guess it could be a tube problem. I would then swap tube positions with one of the other two tubes to make sure.
3) I'm assuming you have set the astig controls to 50/50 across the board while doing the astig magnet settings. If not, try that. Set the focus to 0 across the board as well on all adjustments, then set the magnets for perfect dots all over the screen. THen tweak the astig controls. THen tweak the focus controls. THen astig. THen focus again.
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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 Dec 25, 2008 2:32 am Post subject: |
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Heck, tech support on Christmas Eve no less.
I suck!
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Thu Dec 25, 2008 2:42 am Post subject: |
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Aye Carumba, nice of you to give advice, but telling a newbie with no diagnostic skills to do his own magnet adjustments is like telling a child to drive you to the liquor store when you're drunk. It seems like a good idea at the time....
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Dec 25, 2008 2:43 am Post subject: |
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| Curt Palme wrote: | Heck, tech support on Christmas Eve no less.
I suck!
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You must be bored. Read that manual on that scaler you have for sale.............
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Thu Dec 25, 2008 2:46 am Post subject: |
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| Curt Palme wrote: |
1) Look into the lenses at the tube face. See if that coarse focus pot in the card cage will bring that corner into focus, even if the rest of the tube face is out of focus completely. If by some means you can bring that corner into perfect focus, no matter what the astig or focus settings are at, and no matter what the rest of the tube face looks like, then the problem is electronic within the set.
2) If you cannot bring that corner into focus at all, then I guess it could be a tube problem. I would then swap tube positions with one of the other two tubes to make sure.
:) |
Excellent advice, btw.
The other, extremely remote possibility, through logical elimination, would be tube electronics, right(ie. the focus yoke itself) ? But they fail so seldom, its the last, last diagnostic to swap those between tubes if all else fails, right ?
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Fri Jan 02, 2009 7:45 pm Post subject: |
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| Curt Palme wrote: | I haven't read all of the above posts, but here's what I've found in the past:
1) Look into the lenses at the tube face. See if that coarse focus pot in the card cage will bring that corner into focus, even if the rest of the tube face is out of focus completely. If by some means you can bring that corner into perfect focus, no matter what the astig or focus settings are at, and no matter what the rest of the tube face looks like, then the problem is electronic within the set.
2) If you cannot bring that corner into focus at all, then I guess it could be a tube problem. I would then swap tube positions with one of the other two tubes to make sure.
3) I'm assuming you have set the astig controls to 50/50 across the board while doing the astig magnet settings. If not, try that. Set the focus to 0 across the board as well on all adjustments, then set the magnets for perfect dots all over the screen. THen tweak the astig controls. THen tweak the focus controls. THen astig. THen focus again.
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Turning the green pot in the card cage for focus brings the corner into better focus, but its still not perfect and there are some other areas that arent perfect either. Text isnt really readable from my computer desktop at 1080p in that corner, but then again its also hard to read in the center, maybe im asking too much of it?
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