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seanoise
Joined: 16 Jun 2009
Posts: 29
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| Posted: Tue Jun 16, 2009 7:06 am Post subject: light vertical lines on marquee 9500 ultra, like moire |
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hello, i hope somebody can halp me.
ich have light vertical lines on my marquee 9500 ultra, it looks like a moire effect.
it is visible on not-detailed, dark and middle-light picture-contents, and occurs at high resolutions like 1080p@60hz or 1080p@72hz.
at lower resulutions like 720p@60hz or 720p@72hz its not visible.
it is on all three tubes, even on the internal test-patterns.
do you have an idea?
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Tue Jun 16, 2009 6:22 pm Post subject: |
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Hello
Help us out with some pictures of the problem.
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seanoise
Joined: 16 Jun 2009
Posts: 29
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| Posted: Wed Jun 17, 2009 8:11 am Post subject: |
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hello. good news!
i solved the problem by myself.
the problem was a noise in the connection between the focus-board and the tubes.
i put a ferrit-filter around all three wires, and now the picture is perfect homogen.
maybe someone helps this information...
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Jun 17, 2009 1:37 pm Post subject: |
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| seanoise wrote: | hello. good news!
i solved the problem by myself.
the problem was a noise in the connection between the focus-board and the tubes.
i put a ferrit-filter around all three wires, and now the picture is perfect homogen.
maybe someone helps this information... |
Did you put them on the "bunch" of focus cables?
Athanasios
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seanoise
Joined: 16 Jun 2009
Posts: 29
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| Posted: Wed Jun 17, 2009 2:37 pm Post subject: |
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yes, i put it around the bunch.
means the focus-wires for all three tubes pass the ferrit-filter.
it has the same effect like three filters, one for each tube.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Wed Jun 17, 2009 3:58 pm Post subject: |
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| seanoise wrote: | yes, i put it around the bunch.
means the focus-wires for all three tubes pass the ferrit-filter.
it has the same effect like three filters, one for each tube. |
well ok but there shouldn;'t be any noise in those lines to begin with. Maybe you need to have those boards re-built?
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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 Jun 17, 2009 4:01 pm Post subject: |
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Very interesting, both with the problem and the fix. Can't say I've seen that problem before at all. I'd say leave it for now, but as Dragan says, you might have a problem that will get worse. I'd say the focus board is going bad, maybe the LVPS.
I can't see you damaging anything with your fix, or running it that way for now.
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