Question about Sony BRAVIA KLV-S40A10 40 in. HD-Ready LCD Television

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Black screen, but sound

Hi again. Black screen, but sound. Changed the GE2-card, still black screen. Got help here earlier, someone said it could be the power supply 24vDc. Where is that located? Whats the name of the curciut bord? When the power is on (green diod / light), the screen is dark. If I touch the screen, white "clouds" pops ut the places I touch. Any ideas? Please advice :) Eirik, Norway!

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Maybe it is the panel eeprom,if the panel inverter is good which should be treated with experts

Posted on Jan 14, 2013

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The failure with this LCD is a defective T-con board. If the T-con board is Samsung LJ94-00877E(400W2C4LV2.5), I would suggest to check F1 for open condition. Replacing the fuse fixes the no video, blank screen but sound or replace the entire board if available.

Posted on May 17, 2015

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Posted on Jan 02, 2017

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SOURCE: Black screen, no picture but have sound

the screen is on its way out

Posted on Jan 22, 2009

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SOURCE: Sony Bravia KDL-S40A12U Blank screen

Hello

on your set there is inverter board that is what lights up th backlight on your TV making everything visible that board has went bad.

Thankyou

Posted on Jul 28, 2008

welcomejee
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SOURCE: HELP! KDFE55A20 watching TV and screen goes black and loses sound

Yes, its most probably lamp issue.
Please but original Sony lamp from Sony store and replace it in TV.

Posted on Mar 07, 2009

  • 86 Answers

SOURCE: Sony Bravia KDL 46", no picture, standby light blinks 4 times

Since the TV is still receiving power, the problem is going to be with the TV's mainboard.  After you unplugged the TV and plugged it back in, you said the power light went out again, so I assume the standby light wasn't flashing again?  The flashing standby light is indicating an error code so my suggestion is to contact Sony for service options regardless if there is a warranty or not because service is the only solution to this situation.  Don't forget to provide them the error code or 4 flashes repeating.

Posted on Mar 25, 2009

welcomejee
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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

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I have a Samsung television that went black today. I thought it might be the station so I swithced it and the problem was still there. Can you help me find the part I need to fix it?


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size..

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Watched tv earlier and the picture went black and sound remained


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.

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Hi Ricky, Power supply card seems to have gone bad in this case.If you are technical, try replacing power supply board or consult someone qualified to handle your set.

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if you have power it's not the power supply. It sound like the screen maybe gone on your laptop. Have tried hooking up a monitor to your laptop to see if the screen will come up?

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2 Answers

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Hi...

Look into getting the main power supply replaced

Check the web for someone near you

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1 Answer

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Most likely a power supply component has aged and thus changed value and/or failed. Take it to a reputable repair person.

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The next thing I would check is a close inspection of all the bad capacitors on the board. If you need an idea of what they look like check here.

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1 Answer

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sounds like a bad screen this might be able to be remedied by hooking the laptop straight to a computer monitor threw the ports provided in the back
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I sounds like your back light is out it looks like you might need a new lcd.

I repair digital camera
mike@digitalcamrepair.com

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