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This is a common problem for all LCD screen TV. LCD Screen Goes black after a few seconds of turning ON. repeat ... and still the same. You have a faulty inverter causing the back light of the LCD not functioning. Check for a bloated capacitor on the power supply and inverter circuit board. This capacitors can be seen visually by looking the top of the capacitors. If it is not flat these capacitors might be the problem. If you tested it with a multi tester it is OK, but if the TV is power on , capacitors is no longer working as normal. try replacing the bloated capacitors. Also, there are some capacitors that may have causing the problem. Try to replace the high voltage capacitors (light blue in color) located in the inverter circuit board. replaced all $ or 5 pcs capacitor. usually the value are 12pf by 3KV and 4.7KV by 3KV.

Goodluck. !!

Benjie Ramos (Philippines)

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Q: Screen goes black on Samsung 40 in LCD TV for a few seconds and then goes back on?
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