Question about Sony BRAVIA KDL-40S2010 40 in. LCD Television

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Sony KDL40BX420. Worked great for 3 years. Turned it on the other day and the LCD statretd to come on then went completely dark, no sound either. Any suggestions or has the LCD died.

Worked great 3 years. turned it on the other day and the LCD started to come like normal then went dark. Do not have sound either. LED blinks 6 times and repeats. Has the LCD died? Or it is possibly the main power board? Has been plugged into a surge protector all along. It still functions, no known spikes.

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  • ejohnson3 Apr 03, 2014

    Several people have stated the thermal fuse may have blown. I understand how to bypass, but what can I expect IF the LCD lamp has died? Any risks? Is there a way to test the LCD in this unit, or is bypassing the thermal fuse the only way. This TV was in a garage its entire life. No less than 45 degrees (heated) and no more than about 95 degrees in the summer. Would the heating/cooling cycles have any impact?

  •  Mike M
    Mike M Apr 03, 2014

    Sitting in a garage, dust and grime settling on the interior boards and connectors, then power gets applied....Three years is a long time. I have no advice about monkeying around with fuses, thermocouples etc.

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  • Sony Master
  • 3,320 Answers

I searched the manual but no reference to led codes.
I would contact Sony support. Sony is a great company and will stand by their products.

Posted on Mar 31, 2014

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Posted on Jan 02, 2017

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dsacco86
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SOURCE: my sony kdl40z4100 will not turn on. It worked

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 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

TVtechmaniac
  • 140 Answers

SOURCE: PICTURE WENT BLANK TV TURNED OFF

Replace the thermal fuse part# 1-910-006-44 You can verify this by jumping the connector where the fuse connects and the lamp will come on.

Posted on Aug 21, 2007

  • 208 Answers

SOURCE: Red Light Flashing 6 times

When the lamp fails in this unit, often the thermal fuse opens. The error code is 6 blinks. To replace this part requires a great deal of deal of disassembly.

Posted on Mar 29, 2008

  • 1779 Answers

SOURCE: My LCD Sony HD tv turns off after few seconds.

You need the Inverter Board.

Posted on Sep 14, 2009

  • 608 Answers

SOURCE: Sony Bravia model #KDL52WL130 worked

I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years, some sooner, because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Posted on Dec 09, 2010

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1 Answer

Is it a problem of the inverter board ?


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/
If blinks continue without any pause, the main board is faulty.

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I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years, some sooner, because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
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