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napos
Joined: 21 Oct 2006
Posts: 164
Location: Athens, Greece
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| Posted: Sun Nov 28, 2010 5:47 pm Post subject: Marquee Lens Flapping HELP!!!!!!!!!!! |
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HELP!!!!!!!!!!!!!!
I messed up the lens flapping on my red CRT and I cannot get it back. It seems that the bolts can alter the focus in the direction that corrects the focus, but not enough to correct it!!!!
I am completely lost and I need HELP!!!!!!!!
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Marquee 9500LC Ultra with MP mods, Moome HDMI 1.3 card, Lumagen Radiance XS, Oppo 83 BluRay, Toshiba XE-1 HD-DVD, HTPC with Media Player Classic.
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sun Nov 28, 2010 7:38 pm Post subject: |
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Hello
M8500 is it? "Reset" the bolts by adjusting for a 17mm air gap between the plate holding the tube and the plate holding the lens, and try again.
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napos
Joined: 21 Oct 2006
Posts: 164
Location: Athens, Greece
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| Posted: Sun Nov 28, 2010 7:54 pm Post subject: |
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Hi Tim!
Thank you for the quick reply!
I will ask a friend of mine (who used to work for Sony as a technician) to help me.
He has a lot of experience with CRTs, but is not familiar with the Marquee chassis.
He tried to correct the problem with the technique described in the installation manual, but it seems there is some problem with the 2 lens flapping bolts, and there doesn't seem to be enough of an adjustment. The bolts are too tight on one direction and on the other direction there is very little change and then the bolt loosens completely.
Should we remove the lens completely in order to re-adjust the plate?
P.S. It is an 8500 non ultra!
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Marquee 9500LC Ultra with MP mods, Moome HDMI 1.3 card, Lumagen Radiance XS, Oppo 83 BluRay, Toshiba XE-1 HD-DVD, HTPC with Media Player Classic.
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sun Nov 28, 2010 8:01 pm Post subject: |
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remember to turn 1 bolt a half twist and the other bolt in the opposite direction otherwise nothing happens.
do like time said and put the bolts in a "neutral" position, and make sure optical focus is the best you can get with the front barrel of the lens.
then unfocus by turning the barrel closest to the tube and try again.
make sure the edges of the red are aligned with the green instead of the center (mistake i made too) otherwise the red has to swing too much inwards and you can run out of scheimpflug correction range.
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1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sun Nov 28, 2010 8:11 pm Post subject: |
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Hello
Did you loosen the four clamping bolts above the tubes?
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napos
Joined: 21 Oct 2006
Posts: 164
Location: Athens, Greece
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| Posted: Sun Nov 28, 2010 8:18 pm Post subject: |
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| Tim in Phoenix wrote: | Hello
Did you loosen the four clamping bolts above the tubes?
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Do you mean the bolts with a Phillips type screw that are immediately under the front cover?
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sun Nov 28, 2010 8:36 pm Post subject: |
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No
These are long hex head bolts that clamp the tubes from moving. They must be loosened for scheimpflug adjustment.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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napos
Joined: 21 Oct 2006
Posts: 164
Location: Athens, Greece
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| Posted: Mon Nov 29, 2010 8:38 am Post subject: |
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Thank you all for all your help. I will try loosening the bolts before performing the lens flapping. I will let you know how it goes!
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Mon Nov 29, 2010 12:01 pm Post subject: |
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(muttering to myself) Now if somebody could just explain why I can't get the ^$%#@! blue to dial in at the corners like the freeking G&R I'd be a happy CRT-er.
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Mon Nov 29, 2010 12:04 pm Post subject: |
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| dvh99 wrote: | remember to turn 1 bolt a half twist and the other bolt in the opposite direction otherwise nothing happens.
do like time said and put the bolts in a "neutral" position, and make sure optical focus is the best you can get with the front barrel of the lens.
then unfocus by turning the barrel closest to the tube and try again.
make sure the edges of the red are aligned with the green instead of the center (mistake i made too) otherwise the red has to swing too much inwards and you can run out of scheimpflug correction range. |
Hmmm....'dint try this method yet. Off to the dungeon.
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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napos
Joined: 21 Oct 2006
Posts: 164
Location: Athens, Greece
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| Posted: Sun Dec 05, 2010 6:49 pm Post subject: |
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An update on the situation: Everything is fine!!!
Finally got to fix the lens flapping on the red CRT. My friend who is a technician came over yesterday and managed to fix it. We had to loosen the A and B bolts, but it was still a difficult process because the spring coils that are behind the plate were too tight. Are they supposed to be like that?
Anyway, the focus is now better than ever before. Thank you all for all your help!!!
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Sun Dec 05, 2010 9:08 pm Post subject: |
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| JustGreg wrote: | | (muttering to myself) Now if somebody could just explain why I can't get the ^$%#@! blue to dial in at the corners like the freeking G&R I'd be a happy CRT-er. |
I became a happy CRT'er today when I discovered the bright uniformity was way off and causing the right side of the image to bloom, now its nice and even across the screen, so far it looks 
Soon a 9" will make me an extatic CRT'er, (soon=eons) 
Good luck on the 8500 Napos! 
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