Re: Insignia plasma n2-42p650a11 black horizontal lines
Test the Y-buffer output pins to the panel, they cannot be open nor shorted, where there's these lines, if it's a buffer fault, they would be open, infinite resistance.
Put multimeter in diode mode, the positive probe on the buffer's floating ground, negative on the output pins, should have a forward voltage of 0.7~1.2V.
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