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My Samsung 40" lcd has backlight out, replaced the backlight inverter board, did not work. does tcon board need replaced.

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Yes

cheers

Posted on Dec 04, 2016

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Samsung lcd tv backlight turns off


Check and replace the CCFL lamp/s. Some of them; or all of them might be weak. http://electronicshelponline.blogspot.com/

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SELF DIAGNOSIS FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY LED fl ash indicators is listed in the
instruction manual for the user's knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to
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DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
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This should help you narrow it down. I am also attaching the service manual for you. https://files.acrobat.com/a/preview/16a56e45-a439-48bc-8770-21638f2bab68

Jul 04, 2016 | Sony Bravia Kdl-40ex500 Series 40-inch Lcd...

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I replaced the backlight inverter board on my Samsung smart tv and the screen is still black, what could be causing this?


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Tcon issue?


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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if the inverter board for backlight get to work so the cause either your lcd panel get malfunction or the t- con board doesn't work.

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This does not seem to be a power supply issue but rather an issue with the backlight inverter board. When the screen goes black, take a flash light and focus it on the screen from a close distance and several angles. See if you notice a very faint image. Try changing the channels to make it more noticeable. Try it and let me know

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Ur LCD inverter board is dead.This LCD inverter board help the LCD screen to have the backlight to have light to the LCD screen and get a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement to get ur LCD backlight back to get a picture.This board is a long board in shape.

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How do you replace the lcd inverter in a Samsung


Tries websites Shopjimmy.com,Ebay.com to buy a refurbish LCD backlight inverter.Take all the screws the backcover out with a Philip screw driwer.The board is a long board shape,very easy to replaced just unsrews and disconnect wires.Do the reverse to install.

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Ur LCD inverter backlight board is dead.Replaced this LCD inverter backklight board.U will get ur picture back.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.

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