Question about Samsung Televison & Video
I'd like to change out the E buffer board on my Samsung PN50C4903D plasma tv but I can't see how to remove the (x10) PDP ribbon connectors to the buffer board. The board is an LJ41-08388A Do I pull them off gently or do I have to use a heat gun or something? I've never taken this kind of ribbon connector off before and I don't want to damage these delicate parts and screw up my chances of successfuly replacing the board because I've damaged a connector. Any advice on this please?
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Posted on Jan 02, 2017
SOURCE: LG Plasma TV 42''
These problems are probably bad inverter board that supply the inverted voltages to the back lights. It also could be a failure of the back light itself. This problem should be taken to a service center, where they can test the inverter board and the back lights. You can got to the website of the product and check out the frequently asked questions to see if your problem or similar one have been posted and answered. Hope this helps you with your problem.
Posted on May 14, 2009
SOURCE: Samsung TV Power Supply Board
I doubt that moisture damaged the SMPS bd.
There are many circuit boards in your set and it will take a trained samsung tech to find the problem.
Posted on Jul 17, 2009
a4.. there are 2 of them, upper and lower buffer boards.. they control the top and lower half of screen devided horizontally, i have had many run ins with these sets. and usually the buffer boards arent cheap.
they plug into the ysus( y sustain).. its possible your y sustain is blowing the buffer moduals because one of its i.c.'s under the heatsink has popped on ya.. effectively creating a short that blows the buffer boards.
remove the buffer boards, turn tv on... feel the 2 silver heat sinks on that y sustain( beware dont zap urself.. just the tip of your finger on the heatsinks)
you may find that one is cold and one is hot...if so, you need a new y sus and probably to replace the buffer boards the a4 upper and a4 lower.
If you get a new ysus.. plug the a4 upper and lowers into it, look at your picture.. if ur missing the top half the top buffer is blown or lower half the bottom buffer is blown. or..no picture they could both be blown..an easy way to tell if u have no picture to diagnose is..touch the heatsinks that sit over the chips on the buffers..if they are red hot.. they are bad and shorted internally.
Posted on Dec 11, 2009
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