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    Moderated By: claudio
    Agoraquest Forum Index Television Troubleshooting
      
    Flashing Picture...........Sony Trinitron 32" KV-32S25 Dashboard
    Replies: 9 | Views: 7,905
    Last Reply: July 12, 2009, 1:37 pm

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    Members below have participated in this thread
    jttar | dakota_tech | lordsereg | DRGL | AcadianSeaMonster | skotman | nmacej |
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    Author Flashing Picture...........Sony Trinitron 32" KV-32S25
    lordsereg

    Rank: Sony Fan


    Joined: Apr 30, 2004
    Posts: 1
    From: Omaha, NE

      Posted: 2004-04-30 13:52

    I have a 32" Sony Trinitron TV Model # KV-32S25 (1996). Recently it started to take a while for the picture to come on but you can here the sound right away.  Now it usually takes anywhere form 5 - 10 minutes before you see the picture.  Unfortunately you only see the picture for about a minute before it starts flashing/blinking on and off.  This is now a regular occurance when the TV is shut off and then turned back on.  It is also taking longer for the picture to come on and the duration of the picture flashing/blinking is getting longer too.  Once it stops flashing it works fine.  

    I don't want to take it to a repair shop if it can't be fixed.  I heard that there is a simple/quick fix that will extend the life of my television.  But unfortunately knowledge, it seems, is not free anymore.  I have presented this problem to other people on different websites but they all want anywhere from $40 - $50 dollars for what they term as "Easy to Follow instructions that will be sent directly to my email address".

    Does anyone have any idea what the problem is and if so, is it something that I can fix? I have some electronics knowledge but not enough to know what is causing the problem.  If anyone has had this experience and has fixed the problem, can you please shed some light on my situtation?  This will probably get a lot of negative answers but I believe that if this problem is something that is simple/quick to fix and that I could do it myself with someone's emailed instruction then why should I have to pay for it.
    Please can someone help? 

    Thank you


       


    dakota_tech

    Rank: Sonyphile


    Joined: May 02, 2003
    Posts: 473
    From: usa

      Posted: 2004-05-01 10:32

    It sounds like a weak CRT. And yes if it is not too bad, you can do something about it. Can you use a screw driver?

    Dakota

    -----------------
    http://www.fixyourowntv.com


       
    AcadianSeaMonster

    Rank: Sony Fan


    Joined: Nov 26, 2004
    Posts: 5
    From: Ontario

      Posted: 2004-11-26 12:40

    I am fully trained on the safe operation of a screwdriver. If this problem can be cured, or put into remission, please forward to me the instructions to do so. The patient is a 10 year old KV32TS36. I have a service manual.


       
    DRGL

    Rank: Sony Enthusiant


    Joined: Aug 05, 2004
    Posts: 49
    From:

      Posted: 2004-11-28 10:55

    My money would be on capacitor problem-common wity old Sony's,just fixed one with the exact same problems,replaced all the electrolytic capacitirs in the PSU and all is fine.........


         
    AcadianSeaMonster

    Rank: Sony Fan


    Joined: Nov 26, 2004
    Posts: 5
    From: Ontario

      Posted: 2004-12-01 22:26

     Tried Dakota's fix. Seems to have done the trick for now. No more blinking CRT.

    Thanks Dakota.


       
    AcadianSeaMonster

    Rank: Sony Fan


    Joined: Nov 26, 2004
    Posts: 5
    From: Ontario

      Posted: 2005-02-02 12:51

    Here's one for the archives... I'm not sure if anyone reads these older threads, but here goes.
    Reading the posts above you'll notice I had the blinking / weak CRT problem on a 10yr old KV32TS36. I successfully halted the blinking by using the "screen" knob adjustment procedure (thanks Dakota). About a month later, while the better half was watching "Desperate Housewives" (may be pertinent) she claims she heard two consecutive noises accompanied by the CRT flashing brightly. As best I can tell, the noise was like electrical arcing coming from inside the set. I have not opened it up to inspect.
    Well... whatever happened has improved the picture quality. Prior to this the colors had become somewhat dull (weak CRT ?). Now they are much brighter. The only lingering problem is on power up - the colors are overly green for a minute.
    Try explaining this one you genuises.

    [ This message was edited by: AcadianSeaMonster on 2005-02-02 12:51 ]


       
    jttar
    Moderator
    Premium Member

    Rank: Sony Master


    Joined: Feb 28, 2003
    Posts: 9228
    From: Chicago,IL, USA

      Posted: 2005-02-02 22:00

    ASM,

    You description of electrical arcing may be right on target. There might have been a poor solder joint that overheated enough to arc a better connection. When you get time you might want to inspect the boards for any dull looking joints or signs of heat and touch them up. Either that or "Desperate Housewives" may have been too much for even the CRT to handle.

    Joe


         
    skotman

    Rank: Sony Enthusiant


    Joined: Jan 23, 2005
    Posts: 26
    From: owosso

      Posted: 2005-02-02 22:11

    for the original prob, how did u fix it? mine is doing same thing, different model though.


           
    AcadianSeaMonster

    Rank: Sony Fan


    Joined: Nov 26, 2004
    Posts: 5
    From: Ontario

      Posted: 2005-02-04 18:30



    The original "screen knob adjustment" fix is pretty straight forward; but I'm going to refer you to Dakota's website, http://www.fixyourowntv.com . Send him you make/model specifics and the problem desciption. For me it was $5 well spent.



       
    nmacej

    Rank: Sony Fan


    Joined: Jul 12, 2009
    Posts: 1
    From: Boston, MA

      Posted: 2009-07-12 13:37

    This is more for Dakota_tech out of respect, but if anyone can help I would GREATLY appreciate it!  I'm having the same problem, and literally have $0.. (I still owe rent! haha).  Would it be possible to get the instructions for the screen knob ajustment?  Trust me, if I could pay anything I would!


       
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