Look very close and shine a flashlight on the screen. If you see fain picture, your backlight is out. You can try to purchase parts from shop jimmy. They sell tv parts. You can possibly narrow it down to which board to replace. However the most common prob with TVs these days is electrolytic capacitors. They are sized too close to specs. You can identify the caps as the round cylindrical components. Look at the top metal and it should be flat. If it is bulged out/concave it is probably bad. Replace with same uf value but a higher voltage value that will still fit. Usually higher voltage will be bigger. In some cases I attached longer wires to the caps. Observe the polarity when removing as not all boards are marked very well
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Look very close and shine a flashlight on the screen. If you see fain picture, your backlight is out. You can try to purchase parts from shop jimmy. They sell tv parts. You can possibly narrow it down to which board to replace. However the most common prob with TVs these days is electrolytic capacitors. They are sized too close to specs. You can identify the caps as the round cylindrical components. Look at the top metal and it should be flat. If it is bulged out/concave it is probably bad. Replace with same uf value but a higher voltage value that will still fit. Usually higher voltage will be bigger. In some cases I attached longer wires to the caps. Observe the polarity when removing as not all boards are marked very well