Question about Sony Grand WEGA KDF-60XS955 60" Rear Projection HDTV

2 Answers

Sony tv blinks 30+ times or once, no picture/no sound, then shuts off

Sony kp-46v25 blinks 30+ times or once, no picture/no sound, then shuts off

tv is more than 4 years old, worked well until it just went black as i was watching tv. no picture/no sound (not even the channel # showing) when i turn it on. it blinks for 30+ times, then shuts off. after that, it'll blink once, then shuts off. i've waited 12 hours and nothing has improved. i appreciate all your help! can this be a quick fix or do i need to invest in a new $ tv. this is a big rear video projector tv and it's hard to move.

thanks,
andy I have the exact same problem above and my tv KDF-60xs955 is about 4 yrs old too. Initially it was sporadic that the tv would shut off (no pic or sound) and the green light would blink 30 times and then the pic would come back on followed by the sound a few secs later. Now the tv doesnt stay on for even a minute and the same exact symptoms occur. Even after the tv comes back on it stsyas on only about a minute and goes through the same symptoms again. At this point you can't even watch tv anymore. Is there a fix to this. There is no code flashing and the red light doesn't even come on; only the green flashing at least 30 times every time. Is it time for a new set or to get sucked in to a service call. Thanks. Tim Carlsen

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If you are comfortable doing so and have experience with electronics, first try removing the lamp for about a minute or two and then put it back in and see if it works.

If that doesn't work then you will most likely need a new lamp which I can help you with a number from where you can order one.

If you have any further questions please let me know

Thank you for using Fixya and Good Luck.

(Please always be careful when working on electronics)

Posted on Apr 20, 2008

  • Benjamin Patri
    Benjamin Patri Apr 24, 2008

    Please don't forget to rate this solution as that is one of the biggest aspects of all this website works



    otherwise please let me know if you have further questions



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May i please know the model and the make of the product in details so that it can help me resolving the issue is a more prompt manner

Posted on Apr 20, 2008

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  • Maanita Chadha
    Maanita Chadha Apr 20, 2008

    sounds like a problem in the stand by power supply as the Set is not blinking any code
    indicating its in protective shut down. I would assume its one of the
    low voltage regulators that has shorted. You would need a service
    manual to actually troubleshoot the start up and standby voltages. Let
    me know if you would like a link where to purchase the manual. I will
    post a link that provide free tech assistance to help diagnose and
    repair your set when you get a manual.

  • Maanita Chadha
    Maanita Chadha Apr 20, 2008

    Unless you can do tv
    repair your set has more wrong with it then something minor,it more
    then likely has a shorted Hori out put transistor NTE2973 and maybe
    open pico fuses.Take set to repair shop.

  • Maanita Chadha
    Maanita Chadha Apr 20, 2008

    the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video.
    Check video out, Q705, 732, 761 and other components on the C board,
    also check Q218, 219, 220 on the A board. Also unit be in IK blanking,
    try turning up screen slightly."

    So what is the AKB? It is Auto
    Kine Bias; a circuit that holds the video OFF until the picture tube
    (kinescope) is warm enough to run video. So, if there is trouble within
    the AKB it may not be turning on the crt. Or, the crt could be cold, or
    there could be power supply problems (which I favor because the audio
    is gone, too, which means it is not a "video only" matter).

    Therefore, I do not favor replacing the C board (or A board as indicated in the url above). I favor finding out why the AKB circuit is not functioning.


    It is necessary to get the set to come ON long enough to make sure the
    crt is heating up. You may have to manually defeat the protection
    circuit and force the set to come ON. If you can find the ON relay you
    may be able to hold it ON manually - at least long enough to find out
    more symptoms, but not too long or some further damage may occur.

    Go to: http://www.schematicsforfree.com/archive... where you may find a schematic or service manual for this set - or one that is close/similar enough to be of great value.

    Last comment: Some sets will, upon failure of the AKB function, after a few seconds, go into diagnostics
    - which is similar to protection. So, the audio may be working okey.
    Turn the set on with the volume up; if you hear audio for the until the
    set cycles into the flashing light routine it means the audio is really
    good. So, check that carefully. You may have to do a hard reset to
    cause the AKB function to reset. So, do this: Unplug the power cord for
    4 hours or more. That will reset everything.

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