Question about Sony Bravia KDL-40S4100 40 in. LCD TV

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MY sONY bRAVIA 40" SHUT DOWN BY ITSELF. - Sony Bravia KDL-40S4100 40 in. LCD TV

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  • 36 Answers

The sleep timer is on or your power supply deffective

Posted on Sep 07, 2010

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dsacco86
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SOURCE: my sony bravia tv is flashing red stand by light

Try leaving the TV unpugged for 30 minutes so the TV can reset itself.
If that doesn't work, most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you flashing red light codes, circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

Posted on Jun 29, 2009

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How to stop sony demo mode



  • Turn on your Sony Braviaicon1.png.
  • Press and hold the Up Arrow button on the remote control
  • Press the Powerlb_icon1.png button on the TV while still holding down the Up Arrow button. The TV will turn off and then turn itself back on.

  • Release the Up Arrow button. Once the TV turns itself back on, it will restore your Sony Bravia to its factory settings.

  • http://www.ehow.com/how_5855646_reset-sony-bravia-tv.html

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    When turning on tv. screen will display Bravia image & then go blank. red light flashes SIX times


    Power off the television. Wait a few minutes, then power it back on. If this does not correct the issue leave the power on, point your remote control towards the Sony television and hold the down arrow button. While holding the down arrow button press the "Power" button. Release the down arrow button and the Sony TVicon1.png will reset itself to factory settings. Once the television performs a scan on itself your problem should be gone.
    Good Luck Ed Pinero

    Read more: How to Troubleshoot the Standby Indicator Flashing on a Sony TV ' eHow.com http://www.ehow.com/how_5925008_troubleshoot-indicator-flashing-sony-tv.html#ixzz2KBk1cWbu

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    That actually happened to a tv of mine once-i had some clear diet soda get spilled on front, I didn't clean it out(just off of screen) and I corroded the contacts on the lcd itself. if it is a recent problem get it cleaned/clean it yourself as soon as possible to prevent damage to screens connections. hope this was helpful, good luck. Prodzilla

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    When I was watching TV today my Sony Bravia KDL-40V4100 just swutched off by itself. After 15 minutes or so it came back on by itself, I shut it off soon after. Later on today after watching TV for 15...


    When tv it shutting itself off by it own does the tv power LED light indication flashes?Tv turn on now,the tv power light indication,just flashes?Yes,than ur tv power supply board is the causes and the problems.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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    My sony bravia television will not turn on.... when I unplug it and plug it back in, it will come on for a minute and then shut itself off, and I am not able to get it back on. It doesn't make any noise or...


    i had a similar issue on my bravia where i would switch it on and it would immediately switch off. The issue for me was the power supply. Its worth having a look at..

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    I do not think that cause by power surge, and it is on manufactory warranty, you better to call Sony.

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    Sony bravia tv turns itself off


    The Bravia would shut-off and restart after about a minute of operation repeatedly. I removed the internet connection cable and the problem stopped.

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    My tv shut off by itself & the standby lights flashes 4x in red


    The four blink pattern indicates inverter failure. Since there are different inverter boards for this model (depending on the serial number), I recommend that you take your TV to an authorized Sony servicer for repair.

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    Sony Bravia turns off by itself


    Replace the BU Mount pcb. Sometimes they are called the FB pcb.

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