Question about Sony BRAVIA KDL40BX450 40 Inch 1080p LCD HDTV

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I have a Sony Bravia, Model: KDL40BX450. It's red 'stand-by' light has suddenly gone off and I cannot turn on the TV. What's going on?

The TV is a refurbished one that I purchased less then 6 months ago through Amazon.com. I have had no issues with the TV until now. I have followed all troubleshooting instructions offered by Sony online to no avail. I'm concerned that there is an issue internally.

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I have a sony Bravia 40" LED TV. KDL40BX450.When I turn my set on it has no sound. And the standby light blinks three times and pauses. I have unplugged it. and even reset it to the factory settings. And as long as the set is on the sound works.but once I turn it off. and turn it back on later.it does the same thing again.no sound. what could be wrong .And is there anything I can do to maybe fix it.

Posted on Nov 17, 2013

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Posted on Jan 02, 2017

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SOURCE: Moved Sony Bravia TV, now will not turn on at all

The warranty on this set should be for 1 year. Return it for warranty service. Unless the set was dropped, moving it should not have effected anything. DO NOT open the set sas that would void the warranty.

Dan

Posted on Jun 11, 2008

welcomejee
  • 10594 Answers

SOURCE: Sony KDL-46V3000 Bravia LCD Black screen

Please count Sony KDL-46V3000 standby light blinks as there would be interval of 3 seconds between blinks. Let me know how many times light blinks as its an error code.

Posted on May 17, 2009

  • 36 Answers

SOURCE: Sony Bravia 46Z4100 has a thin vertical red line on the screen

I assume that when you get the line you lose the picture, if so, you have vertical collapse, either a dry joint in the vertical section or capacitors or vertical I.C., I would doubt that the scan coil would be O/C as that is rare. if you can't do it yourself I suggest taking it to a repairer, as it should be an easy fix...Hope that helps...Phil

Posted on May 19, 2009

dsacco86
  • 1077 Answers

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

  • 3 Answers

SOURCE: TV Goes to Stand-by mode

I don't have a solution, but I have the exact same problem

Posted on Sep 08, 2009

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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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