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    Moderated By: claudio
    Agoraquest Forum Index Television Configuration
      
    sony 27FS120 rgb input color adjust? Dashboard
    Replies: 5 | Views: 1,599
    Last Reply: May 23, 2005, 4:00 pm

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    andyross | digiboy | SummitHDTV |
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    Author sony 27FS120 rgb input color adjust?
    digiboy

    Rank: Sony Fan


    Joined: Aug 29, 2004
    Posts: 8
    From: manhattan

      Posted: 2005-05-16 03:07

    I have a 27fs120. the picture is fine with broadcast, composite video, and S video. With component video the reds are a bit too strong. Is this the so-called red push?

    Is there any way to adjust the component input red balance without affecting the color on other inputs?

    I can access the service mode but I can't find any guide specifically for the fs120 series service mode. The service modes for the xbr and 100 series, which I can find guides for, are not quite the same.

    Thanks to anyone who can helpjavascript:editor_insertHTML('message',' ');
    javascript:editor_insertHTML('message','');



       


    SummitHDTV

    Rank: Sony Enthusiant


    Joined: Feb 26, 2005
    Posts: 27
    From: Southeast Michigan

      Posted: 2005-05-21 15:38

    A strong red is the so called "red push".  There should be an AXIS control in the service menu.  If it's default is '1', make it '0'.  If it's default is '0', set it to '1'.  Do this while looking at Red color bars and see if the bars become more consistent (or equal) with each other after the change in AXIS control.

    AXIS is a global command, so all inputs are affected.

    Don't forget to save the AXIS control change before exiting the service menu and document the change on a piece of paper and keep it with your owners manual for reference.  Get AVIA or DVE for the Red color bars pattern.

    -----------------
    Summit HDTV
    Virtual Business Card
    ISF Trained
    CA-6X color analyzer
    VP-403 HD generator
    TVS Pro optical comparator


       
    andyross

    Rank: Sony Legend


    Joined: Mar 09, 2004
    Posts: 1093
    From: Schaumburg, IL

      Posted: 2005-05-22 09:31

    Are you thinking of MTRX? That is the one that is typically 0-3. On my 13FS100, 0 is least push. There may also be BLLV, which only affects Cool and Neutral color modes.

    AXIS goes from 0 to 63, and affects magenta and yellow. Increasing AXIS from 0 changes yellow to lime. At 31, magenta turns to lilac, and yellow goes back to yellow. As you go up to 63, yellow goes to lime again. I think it's used to help compensate for the orangy look you get with basic red push.

    -----------------
    Sony KDL-46EX700, Onkyo TX-NR609, Sony BDP-S370, WDTV Live Streaming, Motorola DCT-6412, RCA RCRP05B.


         
    SummitHDTV

    Rank: Sony Enthusiant


    Joined: Feb 26, 2005
    Posts: 27
    From: Southeast Michigan

      Posted: 2005-05-22 15:31

    Okay, I took another look at our 13FM12 13" analog set.  There are two controls that affect the red color decoder.  They are AXNT and AXPL.  At first I thought AXNT was AXIS for NTSC and AXPL is AXIS for PAL video.  Then the experiment below changed things a bit.

    I set user color using SMPTE color bars after turning off the red and green guns to isolate blue.  Then I used a color decoder check pattern and turned off both the blue and green guns to isolate red.  I verified AXNT has an affect on the red color decoder, though a minimal affect.  Just for grins I changed AXPL and the red decoder bars aligned up nicely.  Further, after changing AXPL, AXNT had no affect anymore if changed.  So, while I can't explain AXNT vs. AXPL, AXPL seemed to work well in my set to better align the red color decoder.  AXNT and AXPL have a range of 0,1.

    There is no MTRX or BLLV control in my service menu, so I can't comment on it.
    YMMV

    -----------------
    Summit HDTV
    Virtual Business Card
    ISF Trained
    CA-6X color analyzer
    VP-403 HD generator
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    digiboy

    Rank: Sony Fan


    Joined: Aug 29, 2004
    Posts: 8
    From: manhattan

      Posted: 2005-05-23 03:10

    This is all helpful but I want to say again that the problem only seems to be with the RGB input. I don't want to make a global adjustment that counteracts the red on all inputs since the other inputs are fine now. I'm asking if there is an adjustment to back off the red that would be specific to the RGB input.
    Thanks

    [ This message was edited by: digiboy on 2005-05-23 03:14 ]


       
    SummitHDTV

    Rank: Sony Enthusiant


    Joined: Feb 26, 2005
    Posts: 27
    From: Southeast Michigan

      Posted: 2005-05-23 16:00


    By RGB, do you mean YPbPr?  That's an important distinction for a potential solution via a hardware 75 Ohm signal attenuator that plugs into the Pr input of the Sony set, reducing the red component of the source device.  There's a history of this device on older Mitsubishi RPTV sets, and is documented very well in the hometheaterspot. 
    Go here http://www.hometheaterspot.com/htsthreads/showflat.php/Cat/0/Number/200608/an/0/page/3#200608

    You need to be a member to access this information.

    You need to solder and follow a circuit diagram.  This patch works only on YPbPr (component video) inputs, namely the Pr input.  This patch is designed for Mits, but has application for you.  I suggest using AVIA or DVE to get a feel for the amount of red push on the Pr input and read the above thread carefully.



    -----------------
    Summit HDTV
    Virtual Business Card
    ISF Trained
    CA-6X color analyzer
    VP-403 HD generator
    TVS Pro optical comparator


       
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