Facing TV Problems? Ask a TV Technician.
Hello, My name is ***** ***** I'll be assisting you. I'm sorry you're having problems. I'm reviewing your details now and will reply shortly.
Offhand, these symptoms point directly to a failure in the set's "Mainboard" (which contains the processor that controls volume, the turn on command, and the Inputs). Additionally this is the ONLY part in the TV that would cause you to have to unplug the set to turn it off. These are all telltale signs of a mainboard failure and we've repaired 100's of this model for this fault. That said, there are no pushbutton fixes for this and the Mainboard does need to be replaced to fix the issue. Are you looking to repair this set yourself and replace the Mainboard?
If so, that part number is: Samsung BN94-03145E and the board is showing as out of stock through about every vendor out there (which are all selling pulled parts as the board has not been produced in several years). If you wanted to fix the TV, you would need to search using that part number above to find a replacement Mainboard and then swap the board out. It's a "plug and play" part- meaning no soldering or special tools are needed to replace it, however it does require removing the back of the set to access it.
The Mainboard is the one with all of the AV and HDMI jacks on it.
Not sure if you read my last reply, but finding that board is going to be the toughest hurdle in repairing this set, as it has not been made in several years, and used/pulled parts are all but used up. However that is the part that needs replacement to fix the issue you're having. You can try using that part number to search eBay, or Google it and see if anyone pops up with a used/pulled board for sale.
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Samsung and others use different boards within the same model. All I can do is search using your model number. Since you have the actual TV there- if your mainboard part number is ***** then you would use that as your search criteria.
No, the capacitors have nothing to do with the symptoms you have. They will only cause a TV to not power up. Just Answer has lots of independent technicians, we are not a think tank of experts. The capacitors causing this problem is not the correct answer. Replace your Mainboard to fix this issue.
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