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CRT Happiness
Joined: 13 Jun 2008
Posts: 7
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| Posted: Fri Jun 13, 2008 1:36 pm Post subject: Screen size problem with Marquee Ultra with 50HZ Pal |
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Hello,
As the title say I have some problems with the screen size when I try to run from my HDTVbox on my Marquee. The case is that the only 3/4 of the screen width is used. The width of my screen is 2.75 meters but when I use the HDTV box I only think that 2.35 meters is covered by image and the side is only black vertical columns. I have no such problem when I run HD DVD or DVD form my Mumitsu both at 1080i 60HZ. Here everything works florless. I can see in the on screen menu on the Marquee that the bandwith on both HD dvd an Momitsu tells that it run 34 KHZ and 60HZ and on the HDTV box it is 28 KHZ and 50HZ, so I believe that the problem is due to the output on the HDTV box.
I dont know if any of you have some experience in this area but I have two Marquee Ultras (8500 and 9500LC with Moome gamma HDMI inputcard in both) and they respons the same way, so I dont know if a expensive scaler is the only way to solve the problem.
Thank you 
Henrik
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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CRT Happiness
Joined: 13 Jun 2008
Posts: 7
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| Posted: Fri Jun 13, 2008 4:06 pm Post subject: |
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Thank you Athanasios
I try to use the phosphor as good as possible with centered image and the H size is set to 100 or 99. Also it is the same Marquee setup on the hdtv box and the DVD players. The phase is also a problem when using the box as the picture is projected to much to the left side. I have had the same experience when I tryed to play a standard DVD on the HD DVD here the picture size and phase was doing the same error. Hope this can help in diagnostic the problem.
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Fri Jun 13, 2008 6:14 pm Post subject: |
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Many have had same problem with euro hdtv box and crt projector. I think signal timings are wrong for crt in those boxes or something. Those boxes are designed for digitals...
Scaler should help, since you can chance porches with it and then you can also chance refresh rate to 75Hz if 50Hz flicker too much.
Last edited by Ile on Fri Jun 13, 2008 6:20 pm; edited 1 time in total
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Fri Jun 13, 2008 6:14 pm Post subject: |
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Hello
On your Marquee remote, push *** and look at the blanking values; zero out left/right blanking and see what that does.
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CRT Happiness
Joined: 13 Jun 2008
Posts: 7
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| Posted: Fri Jun 13, 2008 7:23 pm Post subject: |
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Im not blanking my setup- but thanks. Okay....so a scaler could be the solution. Does anyone knows if there is a difference in the picture quality in DVDO 20VP or DVDO 50VP? I might buy a scaler but I have no idea which one?
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Plexi47
Joined: 20 Jan 2008
Posts: 2
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| Posted: Sat Jun 14, 2008 4:55 am Post subject: |
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That is a very well known issue, caused by too high porch values used in HD @ 50Hz.
Solution is HTPC or scaler.
Mauro
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