I have no sound and no picture and I replaced the main board still same problem, but i do have power
IT is not wise to attempt repairs on LED TVs. They rarely work, and you end up replacing the unit anyway. The newer units have the LED drivers connected directly to the LED screen and there is no way to repair/replace them. Board swap/replacement is tempting, but overall the lost time versus the cost is often not worth it. Sets today are only designed to last 3-5 years. The manufacturers use the minimum rated electronic parts to ensure failure and thus a steady stream of replacement buyers. Some don't even make it out of warranty, but the manufacturers are willing to risk the cost in order to ensure that the planned obsolescence continues. Gone are the days of a set lasting 10-12 years or more. Take that into consideration when buying a replacement and only get what you need. Buying newer features that are not in full use yet only costs more and by the time you get the benefit of them, its time for another new set.
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