Samsung Panasonic Plasma TV Repair Overview - No Image on Screen
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Symptoms of Y buffer & Y sustain - How to diagnose Plasma TV

This video is designed to be a guide for testing and troubleshooting your TV repair. Please note that other complications may exist that aren't addressed in this guide. While we always strive to provide accurate and detailed information, we can't guarantee that it will fix your TV's issues. If you have any questions, please contact us at [email protected] or (877) 881-6492.

We are taking a look at a Samsung Plasma TV here. We have got a 42'' model and we are going to take a look at the Y-sustain and the Y-buffer.
Now the Y-sustain here basically takes the power from the power supply and distributes it to the buffer which then distributes the power throughout the panel.
Some common problems that you could see with the Y-sustain here would be that the TV shuts down and power cycles but there is no picture on the screen. Some other symptoms would be that you have a dark picture on the screen, you have dots or speckles on the image that you are seeing on the screen or you have a flashing screen often with shadowy sections.
You also may hear that the TV makes a popping sound, it is usually pretty loud and then the TV after the popping sound would not be showing an image. Some common symptoms of a problem that could be the y-buffer is that you have no picture on the screen, you have black lines going across the screen. Those lines are typically horizontal and they go all the way across the entire screen. These black lines could also be caused by damage to these ribbon cables. These cables connect to the y-buffer and then are connected to the panel itself. So you want to make that if you are ever working on this board that you do not damage these connections here, the ribbon cables.
You can also get lines across the screen if these ribbon cables are not seated correctly. So, if you do replace this board, you will want to make sure that these connections are properly put all the way back in and line up correctly.
Just a reminder that if you are having any problems with your plasma TV please feel free to comment in the comment section below and please include your TVs model number and the symptoms that your TV is displaying. We will respond to your question or comment as soon as we can with our recommended repair. So now we are going to take a closer look at the ribbon cable connections on this y-buffer board. These connections are very fragile and they are actually bonded into the panel on the other side. So the ribbon cable is bonded into the panel here which you cannot remove and then comes up here into the y-buffer which you can disconnect if you need to replace the board.
Now you will always want to be gentle and remove this tape very smoothly. After you have removed that tape, you can flip up the tab here, this black tab very carefully. Never use a screwdriver or any tool to open this, only use your finger. After you have that pulled up, you can simply pull out the ribbon cable connection here. Sometimes it can be a little bit difficult. Once you have that pulled out, you can go ahead and continue with the rest of them and then remove your board.
To connect them back in, you will want to just slide it in here and you will hear it pop just a little bit on this model it will kind of click into place.
There we go, once you feel that it is back in there smoothly, you can again push down on this tab to secure it and then if your tape is still connected, you can run that tape over smoothly to keep it in place.
Now since these two boards are connected and they share a lot of common symptoms, it is always recommended that you replace both at the same time.
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