Question about Sony BRAVIA KDL-40S2010 40 in. LCD Television
You probably have a bad solder joint on one of the matrix controllers.
Below is an example on a smaller LCD, but it will give you an idea what you are looking for.
As you can see, there are several controllers and each controls a "strip" of pixels
If a solder joint lets loose then that strip will go black or become distorted in color.
To make your day more complete, the vibrations from the speakers will occasionally cause the connection to reconnect, making it a bit harder to locate the EXACT pin that came unsoldered.
In these cases, it's best to put liquid solder flux across all the contacts on that controller and resolder all of the pads on that controller.
These connections are extremely close together though, so make sure you have adequate magnification to check for solder bridges after resoldering the controller to the board.
If your soldering skills aren't great, you may want to have this done at a shop - just don't let them tell you that you need a whole new screen right off the bat. It's almost always just loose solder and not a defective controller, especially if the unit self repairs once in a while.
Posted on Mar 25, 2011
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Posted on Jan 02, 2017
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