1.In this case the problem is usually found in the high voltage power supply.Most probably is the vertical IC defect.
Warning : This procedure has to be done by an expert.It is risky and can cause death to those who dont have knowledge in repairing.
A.) Open the unit and try adjusting the screen variable found in the flyback transformer. Notice any pattern on the screen of your tv.If their is a horizontal white line on the screen the defect is the vertical IC,replacing it can remedy the problem. Also check the 24v supply of the vertical IC coming from the flyback transformer.If their is no 24v get the resistance of the fuseable resistor and rectifier diode.Usually the resistor opens and the diode create short circuit.
B.)For most, make sure that their is no loss contact or cold solder on the board.
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loocks like inverter not working anymore.check wath warranty you have.what brand do you have?
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