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    Moderated By: claudio
    Agoraquest Forum Index Television Troubleshooting
      
    Sony Trinitron KV-32S40 Standby timer light constantly blinks Dashboard
    Replies: 6 | Views: 12,591
    Last Reply: October 17, 2007, 8:36 pm

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    Ra | Freewilly | JSB1 | kd4e |
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    Author Sony Trinitron KV-32S40 Standby timer light constantly blinks
    Freewilly

    Rank: Sony Fan


    Joined: Oct 10, 2007
    Posts: 2
    From:

      Posted: 2007-10-10 21:32

    My 9 yr. old unit screen went black.  I have sound by no picture.  I'm a newbie at TV repair but I build my own computers.  I've unplugged the unit to do a hard reset.  I want to know if it's a simple fix by replacing a module or something or is it complicated.  I don't hear any sizzle sound or clicks when I turn the T.V. on.  There are no lines or light coming from the screen. 


       


    Ra

    Rank: Sonyphile


    Joined: Oct 21, 2006
    Posts: 538
    From: Mass

      Posted: 2007-10-13 17:10

    you may have a bad flyback transformer, try to resolder it's pins and also resolder the hot,and drive tranformer t501,and all around the hv circuit,and  resolder vert IC tda8172 and r536 .47ohms,  also turn up g2 on the back of the fly if you get the pic with retrace lines check D777. 


       
    Ra

    Rank: Sonyphile


    Joined: Oct 21, 2006
    Posts: 538
    From: Mass

      Posted: 2007-10-13 17:52










    On 2007-10-13 17:10, Ra wrote:
    you may have a bad flyback transformer, try to resolder it's pins and also resolder the hot,and drive tranformer t501,and all around the hv circuit,and  resolder vert IC tda8172 and r536 .47ohms,  also turn up g2 on the back of the fly if you get the pic with retrace lines check D777. 


            Y/C JUNGLE IC301


       
    Freewilly

    Rank: Sony Fan


    Joined: Oct 10, 2007
    Posts: 2
    From:

      Posted: 2007-10-13 23:47

    Thanks for the reply.  I was wondering if I was holding my mouth right or something, since it to awhile to get a response .  I have no idea where these components are in the TV.  Is there a place you know of where I can order or preferable download the schematic for the TV.  Is this something a newbie can do or should I take it to a repair shop?  Do you have an estimate of the cost or man hours to perform the repair?  Thank you so much in advance.


       
    JSB1

    Rank: Sony Fan


    Joined: Oct 13, 2007
    Posts: 5
    From:

      Posted: 2007-10-14 00:43

    I have a KV-32S45, manufactured in 1998.  Exact same problem.  When I push the power button, there is an audible click, the red standby light begins to blink, and no picture whatsoever.  I've watched the light to see if there was a pattern and counted up to about 50 blinks that all occurred regularly, without any variation between them, so I figue there is no specific code being put out by this thing.  I've pulled the back cover off and the fuse on the circuit board where the power cord runs in is fine (hasn't been burned out).  I can't see any other visible burned components either.

    Have purchased a service manual for this model, but it doesn't seem to be terribly helpful.

    Would it be correct that Ra's advice would hold true for my TV as well?

    Also, FreeWilly, I can send you the service manual if you like, it will work for your TV as well.  It's about 10 MB though.


       
    kd4e

    Rank: Sony Fan


    Joined: Oct 17, 2007
    Posts: 1
    From: Florida

      Posted: 2007-10-17 19:52

    I have been given a Sony KV-35S42 which flashes the signal
    indicating that the Jungle IC is bad.

    I have tracked down the part number as cxa1213S with newer
    sub cxa1213as and newest sub cxa1213bs for $12. (with a $50.
    shipping charge) or $36. including shipping.

    I am not really fond of trying to unsolder and replace a SMA IC,
    does anyone know if the host board is available as a swap-in?

    If so, where might I acquire one and what would be the price?

    -----------------
    Thanks! doc


         
    Ra

    Rank: Sonyphile


    Joined: Oct 21, 2006
    Posts: 538
    From: Mass

      Posted: 2007-10-17 20:36

    when one say - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.
    It does't mean you have to replace the ic  right away, you have to troubleshoot the circuit itself,if you don't know than take the set to some one that knows.


       
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