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Rittberg
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| Posted: Sun Dec 02, 2012 10:28 am Post subject: 1209s – Picture smearing. |
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I am facing in dark scenes that the picture is distorted by a kind of smearing on the right side of the object as you can see in the attached picture.
The smearing is visible in all the 3 colors.
The smearing is only in the image from the Barco and not in the monitor connected in parallel.
My video chain : HTPC > Darbee > Moome V 1.3 3D > Extron 201 RXi > 15 Meter Belden RG6 > Barco.
To the Extron’s monitor output is connected a Sony CRT 24 inch – and the picture is perfect.
Tried to work directly from the HTPC > Barco but the smearing remain.
What board can produce this kind of smearing ?
Thanks for any idea.
Rittberg
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Sun Dec 02, 2012 11:27 am Post subject: |
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I guess you connect RG6 to bnc's, so that rules port3 board out.
So most probably bad port5 (switcher) or driver board.
Not so likely that all three neck boards are bad or that horizontal deflection board would cause this.
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Rittberg
Guest
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| Posted: Sun Dec 02, 2012 12:02 pm Post subject: |
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Thanks,
Can you point on the switcher & driver board.
Thanks.
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Motobias
Joined: 08 Jul 2008
Posts: 163
Location: Osnabrueck, Germany
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| Posted: Sun Dec 02, 2012 12:51 pm Post subject: |
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Rittberg
Guest
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| Posted: Sun Dec 02, 2012 12:59 pm Post subject: |
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Thanks,
So, the switcher is the "video RGB switcher board. what is the "driver board" ?
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Motobias
Joined: 08 Jul 2008
Posts: 163
Location: Osnabrueck, Germany
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| Posted: Sun Dec 02, 2012 1:03 pm Post subject: |
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no idea 
_________________
Most peope talk about HD without knowing the meaning and how to do it RIGHT !
FIGHTING STUPIDITY SINCE 1983
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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: Sun Dec 02, 2012 3:29 pm Post subject: |
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THe problem could be the RGB switcher board or the quad decoder. I would connect a short VGA to BNC cable to the port 5 input via a computer with negative sync to rule out something in the signal source or the 25' cable. I've got the boards if you need them.
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Rittberg
Guest
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| Posted: Sun Dec 02, 2012 5:21 pm Post subject: |
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Thanks for all the suggestions, will check it soon.
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Mon Dec 03, 2012 12:19 am Post subject: |
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| Rittberg wrote: | Thanks,
So, the switcher is the "video RGB switcher board. what is the "driver board" ? |
The Driver Board should be the one "Quad Decoder" is pointing to. The Quad Decoder is on the back of the switcher board. The driver should be R76XX20 Switcher is R76XX19. I have an 808 chassis but I believe the layout is much the same.
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Rittberg
Guest
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| Posted: Fri Dec 21, 2012 3:15 pm Post subject: |
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Only yesterday I find the time to check the suggested card. The problem was solved when I replaced the RGB Switching card (with the attached QUAD Decoder).
Thanks for the ideas.
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