Question about Sony 40 KDL40BX420 LCD TV

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Sony 40 KDL40BX420 after 45 or 1 hour running tv turn of then auto restart

The back light is not working

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Power supply regulator board problem. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

Posted on Mar 20, 2014

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I have a Sony Bravia LCD, while cleaing the room water goes in the LCD and now when ever i turn on, its stay on for 5 second and then goes to Standby and red light blink on the panel.


Tries tv unplug,replug tv back like about an hour later.The tv now should be resetting back to the factory setting.The tv should work now.But,if the tv still have same problems,the 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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Sony wega 55 inch tv turns on fine but after one minute tv shuts itself off and comes back on 40 seconds later by itself and this cycle continues - none of the error code lights blink


This kind of problem occurs when lamp becomes weak that means near to end of working life hours but still not dead nor broken.
Replacement of lamp in tv will solve your problem, lamp replacement procedure is easy and would be written in user manual.
Thanks.

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1 Answer

Status light flashing 5 times on BRAND NEW SONY DL40EX700 40 in TV......?


Tries unplug,replug like an hour later,let the tv reset it self back to factory setting.The tv should work now,not than.Call Sony corp. for a warrenty repair.

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My sony bravia tv will not turn on, the light on the bottom comes on but the screen is completely blank. i was watching it two hours earlier and i turned it off myself. than it didnt work when i tried...


Do you have...a dvd player a ps3 a box?

Becouse if you have, you need to change the input and maybe you forget to put it right back.

Imagine you have a ps3, you have to change the input from tv to HDMI right..well if stop play or watcha movie and torn off the LCD...when you came again the next day the LCD starts as HDMI and not as TV.

You need to change the input...

Hope it helps, if the problem persists it´s a malfuncion...

bye
Cyber

Mar 27, 2010 | Sony BRAVIA KDL-40S2010 40 in. LCD...

1 Answer

I have a Sony Bravia KDS-60A3000. I changed the lamp, plugged in the TV and it was working. Was trying to reset lamp indicator, power went off, red indicator light is blinking and cannot get TV to turn off...


I went to another tech site and saw a suggestion to unplug the TV for a couple hours and then plug back in to see if this helped, but they also indicated this could be a serious power problem. I was really concerned, but tried it and it worked! I think it was running some kind of diagnostics after the new lamp was placed. Back up and running!

Dec 31, 2009 | Sony BRAVIA KDL-40S2010 40 in. LCD...

2 Answers

40'' Sony Bravia goes into standby with the light blinking 9 times


I finally managed to solve this problem by unplugging everything - scarts - HDD cables - power etc and left it for an hour. When I turned it back on again the problem had sorted itself out.

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1 Answer

Flashing Standby Light - Sony 40 in Bravia


Similar problem. Unplug for 36 hours solved the problem.

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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.

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1 Answer

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.

Jun 13, 2009 | Sony BRAVIA KDL-40S2010 40 in. LCD...

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