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mr_ro_co
Joined: 08 May 2006
Posts: 1077
Location: Oakland CA
TV/Projector: two 9500LC Ultras
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 Link Posted: Thu May 10, 2012 2:12 am Post subject: 9500 ultra won't hold EM focus and loses some convergence |
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My daily driver isn't keeping focus and is losing a large degree of convergence after being powered down. I think Craig jinxed it because I swear it was working just fine until he started dissing the Marquee. The strange thing is, it seems to be keeping geometry, and it's keeping the EM focus values for top/bottom/right/left for all colors. It's just not keeping the center focus values. Something around a value of 70 or so is getting sharp center focus, but after the set is power cycled, it's back to something like 30 for all three colors.
Anyone ever seen this? What are the suspect boards? Does this reside in the FGM?
Thanks,
Steve
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Mega Screen RIP
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Nashou66
Joined: 12 Jan 2007
Posts: 12824
Location: West Seneca NY
TV/Projector: Marquee 8000, 8500 And a 9500LC RetroIV , 2 Longbow 8500 Ultras(2004!!)Hd145's , Ampro 3600, a G90!!
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CIR Engineering
Joined: 25 Aug 2008
Posts: 2456
Location: Chicago USA & Berlin Germany
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| Link Posted: Thu May 10, 2012 1:12 pm Post subject: Re: 9500 ultra won't hold EM focus and loses some convergenc |
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| mr_ro_co wrote: | | My daily driver isn't keeping focus and is losing a large degree of convergence after being powered down. I think Craig jinxed it because I swear it was working just fine until he started dissing the Marquee... |
Sorry.
But really I wasn't trying to diss Marquee... just trying to explain the benefits and weaknesses of each projector type from my experience.
Reset the board to "0 days since last accident" and see how long she goes after this repair  Good thing is that you'll probably get it figured out quickly because that is a strength of Marquee.
craigr
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Phone: 865-405-6892
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mr_ro_co
Joined: 08 May 2006
Posts: 1077
Location: Oakland CA
TV/Projector: two 9500LC Ultras
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mr_ro_co
Joined: 08 May 2006
Posts: 1077
Location: Oakland CA
TV/Projector: two 9500LC Ultras
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| Link Posted: Thu May 10, 2012 1:39 pm Post subject: Re: 9500 ultra won't hold EM focus and loses some convergenc |
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| CIR Engineering wrote: | | mr_ro_co wrote: | | My daily driver isn't keeping focus and is losing a large degree of convergence after being powered down. I think Craig jinxed it because I swear it was working just fine until he started dissing the Marquee... |
Sorry.
But really I wasn't trying to diss Marquee... just trying to explain the benefits and weaknesses of each projector type from my experience.
Reset the board to "0 days since last accident" and see how long she goes after this repair Good thing is that you'll probably get it figured out quickly because that is a strength of Marquee.
craigr |
I was being facetious. I've had my share of minor issues with both my ultras. While they work well almost all the time, they do experience occasional faults. It would be nice if they were even better (I suspect some just are), because after they work well for a long time it's a real inconvenience when something goes south.
Steve
_________________
Mega Screen RIP
http://www.youtube.com/watch?v=XGc7UV7Ifqg&feature=youtu.be
The Deliverator
http://www.youtube.com/watch?v=rdCcVCpoO5o
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 18039
Location: Langley, BC
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| Link Posted: Thu May 10, 2012 4:55 pm Post subject: |
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Clean all module contacts with Caig, but you could have HV shifting within the HVPS. That could explain both the focusing and the convergence shift.
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