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LCD TV automatically turn off and on

I bought a Sony Bravia KDL46X2000 LCD TV in Sept 2006. Since May this year, the tv will switch off & on automatically while it is on. Normally, it happens more frequent if the tv is on for long hour. For example, if the tv is on for three hours, it may happen four or five times in between. The Sony authorized repairer already changed the tuner for two times, the problem is still existed. I just wondering if the problem is with the power supply ?

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  • jbarela Nov 24, 2007

    I have a Sony KDL-V2500 HDTV that randomly turns off and back on in just a matter of seconds.

  • KDL46X Jul 09, 2008

    Same problem with a KDL46X2000 no fix so far - replace digital tuner twice.

  • warpcore01 Mar 06, 2009

    My Sony KDL-46X2000 turns off then back on by itself also. Purchased 05/2007. Can happen after 1hr or 6hrs of being on and luckly very infrequent. Might do it twice in one month or as little as once in three months and it barely takes a second or two to do the on/off cycle. Thought it might be RF interferance but have moved house and it still does it. Techo's have had if for three wks now but ofcourse cant find anything wrong. Oh, and losses the HDMI 1080p vid/sound feed occasionally for a second or two from both a BD player and PS3, but not my DVD players 720p or 1080i feed. Chord Co.SilverPlus cable used(& others) so its not that.

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  • Televison & ... Master
  • 30,035 Answers

It is likely to be capacitors in the power supply.

Posted on Jun 09, 2017

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: Protron PLTV-32CM LCD no picture

This TV set is still under the warranty and it seems proton has no local service available to you. I know its to late to tell you this but anytime you purchase a set, ask first and see if there is a service local to you. Ok enough of that noise.. I would go back to the store where it was purchaced and ask them if they know of any local shops that handle the warranty repairs.. If you want to pay for the repair, and that will most likly be alot for a flat panel set, You will have to call back proton and ask about the shipping cost and whos responsible for that.

Posted on Sep 30, 2006

  • 87 Answers

SOURCE: Vizio GV42L LCD TV screen black when turn TV on first time

If you are using a set top box this might be caused by turnig the box on at the same tie as you turn the tv on or slightly after you turn the tv on.  If you are using compnent or HDMI inputs the set needs to see the signal as it is turned on to know what formt the signal is in. 

I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92

Posted on Oct 23, 2007

welcomejee
  • 10594 Answers

SOURCE: Sony KDL40S2010 Bravia LCD TV... turns off / on on it's own

If TV does not remain in standby and turns on itself then power switch on top of it could be defective and power supply board is also suspected. Take off its back cover and unplug top switch connector just to confirm is that cause of On-Off its own. If problem still exist then power supply board has problem and will be replaced. Let me know the results to move forward.

Posted on Jun 13, 2009

  • 47 Answers

SOURCE: My Sony Bravia turns itself off Stand by red light blinks twice.

If you bought it brand new from a dealer, I would take it back or have them come out and look at it. Less than a month old, it is still under the 1 year MFG warranty or the very best a 30 day one.

Posted on Jun 22, 2009

  • 73 Answers

SOURCE: My brand new 40

This is a characteristic of the dynamic backlight used on this set.Turn off the dynamic contrast in the customer menu this should solve your problem.

Posted on Oct 15, 2009

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