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kschmit2
Joined: 09 Mar 2006
Posts: 1141
Location: Heidelberg, Germany
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| Posted: Sun Jan 11, 2009 9:43 am Post subject: |
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| Satanier wrote: | | When messing with the magnets, I tried both displacing and rotating different pairs, pretty much at random, and nothing would even seem to change the upper left///left side///right side of the green tube. before I try again I want to be sure there isnt something else, the green is abnormally bad I think, it really seems like something else is wrong. |
The magnets are only supposed to adjust the center astig. Electronic astic is used for the sides and corners.
Of course you will first have to do center (mechanical) astig properly before you can successfully do side and corner (electronic) astig.
I really need to complete my astig guide for the XGone day. So far only the astig guide for the NEC PG is complete.
Maybe it can still be of help to you:
http://curtpalme.com/forum/viewtopic.php?t=10078
Also read Doug's notes towards the bottom of that thread. I have not yet added that info to the opening post.
Kai
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Sun Jan 11, 2009 9:10 pm Post subject: |
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| AnalogRocks wrote: | | Fungus? |
Never seen "fungus" on an NEC, AC or LC.
There's always a first time I guess.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Sun Jan 11, 2009 9:26 pm Post subject: |
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Just thought I would throw that out there. I don't remember anyone with an NEC talking about it either now that you mention it.
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CRT.
HD done right!
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Mon Jan 12, 2009 12:03 am Post subject: |
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| kschmit2 wrote: | | Satanier wrote: | | When messing with the magnets, I tried both displacing and rotating different pairs, pretty much at random, and nothing would even seem to change the upper left///left side///right side of the green tube. before I try again I want to be sure there isnt something else, the green is abnormally bad I think, it really seems like something else is wrong. |
The magnets are only supposed to adjust the center astig. Electronic astic is used for the sides and corners.
Of course you will first have to do center (mechanical) astig properly before you can successfully do side and corner (electronic) astig.
I really need to complete my astig guide for the XGone day. So far only the astig guide for the NEC PG is complete.
Maybe it can still be of help to you:
http://curtpalme.com/forum/viewtopic.php?t=10078
Also read Doug's notes towards the bottom of that thread. I have not yet added that info to the opening post.
Kai |
So what's up with my green tube??? I really want to fix this.
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Mr. Green
Joined: 23 Feb 2007
Posts: 1394
Location: Calgary
TV/Projector: Marquee 9501LC / NEC 9PG+
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| Posted: Mon Jan 12, 2009 12:39 am Post subject: |
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No clue. I was sure the astig magnets were it and following the astig guide would fix it.
Grasping at straws here, have you fiddled with the schlephfung (?) adjustments (tabs behind where the lenses attach). I am very big on trying every single adjustment to see if any make a difference. I played with every adjustment mechanical and electronic to see if I could at least get something to change so I could eliminate problems. At the very least I learned how a lot of things work. For me it was playing with the centering and astig magnets back and forth, then re-doing the lens focus. Look for the NEC setup guide. It had some stuff in there that was helpful.
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You can be young only once but, you can be immature forever.
Current Projector Marquee9501LC with PS3 (BLu-Ray) at 1080P LOVE IT! Screen is an Elunevision 120" 4:3 (2.4 gain - no hotspots). (also own a NEC 9PG+)
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kschmit2
Joined: 09 Mar 2006
Posts: 1141
Location: Heidelberg, Germany
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Mon Jan 12, 2009 9:39 pm Post subject: |
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I'm fairly certain the issue is electronic, as I can see the blurriness in the affected regions when looking into the lens.
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jarseneau
Joined: 06 Nov 2007
Posts: 323
Location: WI
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| Posted: Tue Jan 13, 2009 2:11 am Post subject: |
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Not to interfere with Curt's business at all but if your location makes it advantageous to send your A and F drives to me just to check if they are the problem, I would volunteer to check that out. You would need to cover shipping.
Oh... and send me any gold jewelry you have lying around  .
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Jerry
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Tue Jan 13, 2009 2:23 am Post subject: |
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| jarseneau wrote: | Not to interfere with Curt's business at all but if your location makes it advantageous to send your A and F drives to me just to check if they are the problem, I would volunteer to check that out. You would need to cover shipping.
Oh... and send me any gold jewelry you have lying around . |
I swapped the wires for the F and A drives one at a time between the green and blue and the problem stayed exactly the same on the green...
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Tue Jan 13, 2009 9:07 pm Post subject: |
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That's why we are stumped.
Swap the red and blue tubes completely. I think the HV lines will reach.
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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: Tue Jan 13, 2009 10:35 pm Post subject: |
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I haven't read every post here, but I keep seeing this poor thread getting bumped. Mark will probably agree with me (and I think he meant swap the green and blue tube completely).. try this:
Set all astig and focus settings to 0 in the menus. Adjust the astig rings on the tube neck to give you clean round dots on the tube face.
See if the focus trimpot on the board in the card cage will give you clean focus all over the tube face, regardless of what the REST of the tube face looks like. In other words, use that trimpot to make sure you can get decent optical focus all over the tube face, one area at a time.
If so, then I would say the tube is OK, but it can't hurt to swap it with another one in the set. If one area of the tube face is good only when other areas are way out of focus, I'd say you have an electronic drive issue, unrelated to the tube.
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Mr. Green
Joined: 23 Feb 2007
Posts: 1394
Location: Calgary
TV/Projector: Marquee 9501LC / NEC 9PG+
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| Posted: Wed Jan 14, 2009 1:49 am Post subject: |
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Uh, yeah... at least there were pictures... 
_________________
You can be young only once but, you can be immature forever.
Current Projector Marquee9501LC with PS3 (BLu-Ray) at 1080P LOVE IT! Screen is an Elunevision 120" 4:3 (2.4 gain - no hotspots). (also own a NEC 9PG+)
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Wed Jan 14, 2009 4:31 am Post subject: |
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I can't redo the magnetic astig just now, and I don't want to reset all my focus and astig because right now during actual movie content it looks quite good. But I did try the focus pot and the areas of problem will not come into focus no matter what the pot is set to. I took a better picture tonight also.
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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 Jan 14, 2009 4:39 am Post subject: |
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OK, that's not great, but it's not horrible either. Since you tweaked the controls, can you make the far right and left sides come in focus more by tweaking the main focus pot in the card cage, even if the middle goes out of focus?
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Wed Jan 14, 2009 5:16 am Post subject: |
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| Curt Palme wrote: | | OK, that's not great, but it's not horrible either. Since you tweaked the controls, can you make the far right and left sides come in focus more by tweaking the main focus pot in the card cage, even if the middle goes out of focus? |
No, they just wont come into focus, the right side gets closer than the left does though, but neither comes within acceptable range.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Jan 14, 2009 6:20 am Post subject: |
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An EM looking like a high hour ES 
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HD done right!
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kschmit2
Joined: 09 Mar 2006
Posts: 1141
Location: Heidelberg, Germany
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| Posted: Wed Jan 14, 2009 9:04 am Post subject: |
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| AnalogRocks wrote: | | An EM looking like a high hour ES |
I'm pretty sure the last pic is just overexposed quite a bit, causing green to bloom.
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kschmit2
Joined: 09 Mar 2006
Posts: 1141
Location: Heidelberg, Germany
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| Posted: Wed Jan 14, 2009 9:05 am Post subject: |
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Curt, didn't you once run into a focus problem where it eventually turned out that one of the yokes was mounted in the wrong orientation (reversed)?
Kai
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Satanier
Joined: 25 Aug 2008
Posts: 185
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| Posted: Wed Jan 14, 2009 3:54 pm Post subject: |
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| kschmit2 wrote: | | AnalogRocks wrote: | | An EM looking like a high hour ES |
I'm pretty sure the last pic is just overexposed quite a bit, causing green to bloom. |
Are you referring to the left and right sides? That's almost exactly what it looks like in real life.
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jarseneau
Joined: 06 Nov 2007
Posts: 323
Location: WI
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| Posted: Wed Jan 14, 2009 4:00 pm Post subject: |
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| Satanier wrote: | | I can't redo the magnetic astig just now, and I don't want to reset all my focus and astig because right now during actual movie content it looks quite good. But I did try the focus pot and the areas of problem will not come into focus no matter what the pot is set to. |
What I see in the picture is some haziness on the left side and upper corner that could be optical edge focus (the forward wingnut on the lens) or it could be weak electronic focus. If I were there, I would prove which it is by doing the Guy Kuo focus method which looks for the grain in the CRT phosphor to establish mechanical focus. To try this, defocus the green tube entirely using the focus pot to eliminate any possibility of scan lines. Then project an all white screen with the green CRT only. Look for a grainy pattern on the screen. This is the phosphor surface showing on the screen. You will only see this grain with near perfect focus. If you don't see it, don't blame the electronics and work on your edge focus
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Jerry
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