One of the most common issues on these models are failing solder connections on the high voltage transformer. If you or someone is comfortable resoldering, this is not a very complex task. The back requires removal of torx type screws, once that is removed the high voltage transformer is located on the board on the left side and it has a thick red wire coming out of it. Getting to the bottom requires taking the board out, but also requires disconnecting connectors and plugs on it and removing a few screws that hold it in. With help you maybe alble to turn the TV on its side to get to the transformer. On the bottom of the transformer there about 12 pins in circular formation that have solder on them. Specifically look at pin 11 as it will most likely have a cracked ring of solder around it. The secret to resoldering is to use solder wick to remove the solder thats on all the pins then resolder with new 60/40 solder. The issue was the original solder is lead free and after some use it develops cracks in it. The 60/40 has lead so this is why its important to remove all of the old solder first. Good luck ; )
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