Hello Sir, this is an inverter circuit problem, this circuit powers the LCD backlight of your TV. this needs to be replaced. Check Ebay for an exact board. or call your dealer first for warranty.
Hello,
Also, you might have gotten a power surge, or a power spike. This can also occur without a lightning storm. Sometimes through your power eletric provider.
A power surge, or transient voltage, is an increase in voltage significantly above the designated level in a flow of electricity. In normal household and office wiring in the United States, the standard voltage is 120 volts. If the voltage rises above 120 volts, there is a problem.
Of course though, Just trying to help.
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