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Samsung lcd tv backlight turns off

The backlight goes out after several minutes or hours of operation. The TV starts fine and will sometimes go for a day or two without losing backlight. I have replaced the backlight inverter board, but am still drawing greater than 1V on the inverter in position T203. Does the CFL need to be replaced? I have a hard time seeing an image with the "flashlight" test but the sound is still on and there are no other problems that would indicate a TCON board.

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

Posted on Sep 04, 2016

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Posted on Jan 02, 2017

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My Samsung LC55C630's backlight sometimes turns off. Recently it has been consistently turning off when I switch HDMI sources. Do I need to replace the backlight inverter?


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No quick fixes. A component such as a capacitor is heating up and failing. Sometimes a cracked solder connection will work fine until it heats up and no longer sustains the connection.

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