We have seen many large flat screen TVs do this. It is usually one or more bad capacitors on the power board. A cap is a few bucks and easy to replace if you can desolder and solder. You need to identify the bad capacitor. The bad cap will look buldged out or extra fat and deformed. The small cross on the top of the cap usually splits when they go bad. (This is because of a chemical reaction in the capacitor that expands therefore leading to the buldging.) Find the bad cap and replace it.
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We have seen many large flat screen TVs do this. It is usually one or more bad capacitors on the power board.
- A cap is a few bucks and easy to replace if you can desolder and solder.
- You need to identify the bad capacitor.
- The bad cap will look buldged out or extra fat and deformed.
- The small cross on the top of the cap usually splits when they go bad.
- (This is because of a chemical reaction in the capacitor that expands therefore leading to the buldging.)
- Find the bad cap and replace it.