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NewbieDAN
Joined: 09 Mar 2006
Posts: 319
Location: Bunbury Western Australia
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| Posted: Thu Jan 15, 2009 1:51 am Post subject: BG1209s High-Scan Hor-Def Board ringing fix? |
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Are any Barco guru's aware of the apparent ringing/tearing on the left side of the raster (ceiling mounted) whilst the Horizontal Deflection board is in High can mode?....and if so is there a documented fix, for the ringing, rather than just swaping out Hor-Def boards to one which exibits the problem least worst.
Cheers
Daniel
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Thu Jan 15, 2009 1:59 am Post subject: |
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I feel your pain mate 
It only bothers me on test patterns though.
Dave
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Thu Jan 15, 2009 2:09 am Post subject: Re: BG1209s High-Scan Hor-Def Board ringing fix? |
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| NewbieDAN wrote: | Are any Barco guru's aware of the apparent ringing/tearing on the left side of the raster (ceiling mounted) whilst the Horizontal Deflection board is in High can mode?....and if so is there a documented fix, for the ringing, rather than just swaping out Hor-Def boards to one which exibits the problem least worst.
Cheers
Daniel |
Bjorn had a similar problem and turned out to be a bad scan coil.
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NewbieDAN
Joined: 09 Mar 2006
Posts: 319
Location: Bunbury Western Australia
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| Posted: Thu Jan 15, 2009 2:49 am Post subject: Re: BG1209s High-Scan Hor-Def Board ringing fix? |
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| Tom.W wrote: | | NewbieDAN wrote: | Are any Barco guru's aware of the apparent ringing/tearing on the left side of the raster (ceiling mounted) whilst the Horizontal Deflection board is in High can mode?....and if so is there a documented fix, for the ringing, rather than just swaping out Hor-Def boards to one which exibits the problem least worst.
Cheers
Daniel |
Bjorn had a similar problem and turned out to be a bad scan coil. |
The scan coil on the Hor Def board?
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Thu Jan 15, 2009 2:55 am Post subject: |
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Never mind... 
Last edited by Tom.W on Thu Jan 15, 2009 4:25 am; edited 1 time in total
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Rusty
Joined: 07 Mar 2006
Posts: 108
Location: Norway
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Thu Jan 15, 2009 3:40 am Post subject: |
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So much for my memory.....
That's the post I was referring to.
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Thu Jan 15, 2009 5:58 am Post subject: |
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Symptoms...
Thanks to Bjorn wherever he is ?
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Gary M.
Guest
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| Posted: Thu Jan 15, 2009 7:19 am Post subject: |
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for the record I have never owned a CRT display that didn't have this ringing to some degree, Toshiba/Panny/Mits RPTV, Ampro units, Barco 808, NEC 1352LC, it is a known CRT issue and one that I cannot stand to deal with
this is so easy to fix, with a scaler (and HTPC I guess)
expand the horz size on the Barco until this nastiness is off screen, then with the scaler take the horz porches and bring the image back into proper aspect
problem solved, internal test patterns and controls will be slightly off screen now but who cares?
-Gary
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Thu Jan 15, 2009 9:19 am Post subject: |
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Yes, they all do it - that's why the back porch is larger than the front porch = to let the beam settle down.
I have a little bit on my NEC. I could add more porches pixels to move it over, but then the centre will get softer.
Swings and Roundabouts...
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NewbieDAN
Joined: 09 Mar 2006
Posts: 319
Location: Bunbury Western Australia
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| Posted: Thu Jan 15, 2009 11:52 am Post subject: |
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Mad Mr H says he's had some luck in the past, so Andy's gonna to try to send thru some information for a 'fix'. I'm not running a capable scaler that can deal with 1080p at various frequencies (like 72Hz) so I'm going to have to try fopr the fix rather than the work around in the way of porches, for the time being.
Dan
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WTS
Joined: 08 Mar 2006
Posts: 1276
Location: Calgary
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| Posted: Thu Jan 15, 2009 2:21 pm Post subject: |
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Greg claims he has a fix for it in his bag of mods he does for barcos but I doubt he'll share that with anyone, I've asked. But like others have said it doesn't really bother me either as it's very slight on mine.
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Walter
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