A friend figured this out for me. Don't start with the power or main board replacement. I had the same problem and it ended up being the wireless network chip. If you put a laser thermometer up to it while the TV was running, before it started buzzing and blacks out, its waaay hotter than everything else. We just pulled the chip from the main board and everything works now(but with out wireless internet but I don't need that because I use a chromecast). After reading around online these wireless chips are common in many different devices and are know for causing issues. Its the chip on the main board closest to the red and white audio inputs and should have a wire/cable connected to it that the antenna. It's easy to take off and doesn't cost anything so you may as well start with testing before trying anything else.
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A friend figured this out for me. Don't start with the power or main board replacement. I had the same problem and it ended up being the wireless network chip. If you put a laser thermometer up to it while the TV was running, before it started buzzing and blacks out, its waaay hotter than everything else. We just pulled the chip from the main board and everything works now(but with out wireless internet but I don't need that because I use a chromecast). After reading around online these wireless chips are common in many different devices and are know for causing issues. Its the chip on the main board closest to the red and white audio inputs and should have a wire/cable connected to it that the antenna. You can removed it with out soldering and it should say Antenna/Foxconn on it. It's easy to take off and doesn't cost anything so you may as well start with testing before trying anything else.
For anyone else trying to fix this issue. A friend figured this out. Don't start with the power or main board replacement. I had the same problem and it ended up being the wireless network chip. If you put a laser thermometer up to it while the TV was running, before it started buzzing and blacks out, its waaay hotter than everything else. We just pulled the chip from the main board and everythings work now(but with out wireless internet but I don't need that because I use a chromecast). After reading around online these wireless chips are common in many different devices and are know for causing issues. Its the chip on the main board closest to the red and white audio inputs and should have a wire/cable connected to it that the antenna. It's easy to take off and doesn't cost anything so you may as well start with testing before trying anything else.
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A friend figured this out for me. Don't start with the power or main board replacement. I had the same problem and it ended up being the wireless network chip. If you put a laser thermometer up to it while the TV was running, before it started buzzing and blacks out, its waaay hotter than everything else. We just pulled the chip from the main board and everything works now(but with out wireless internet but I don't need that because I use a chromecast). After reading around online these wireless chips are common in many different devices and are know for causing issues. Its the chip on the main board closest to the red and white audio inputs and should have a wire/cable connected to it that the antenna. It's easy to take off and doesn't cost anything so you may as well start with testing before trying anything else.
For anyone else trying to fix this issue. A friend figured this out. Don't start with the power or main board replacement. I had the same problem and it ended up being the wireless network chip. If you put a laser thermometer up to it while the TV was running, before it started buzzing and blacks out, its waaay hotter than everything else. We just pulled the chip from the main board and everythings work now(but with out wireless internet but I don't need that because I use a chromecast). After reading around online these wireless chips are common in many different devices and are know for causing issues. Its the chip on the main board closest to the red and white audio inputs and should have a wire/cable connected to it that the antenna. It's easy to take off and doesn't cost anything so you may as well start with testing before trying anything else.