LED 4500, 4300 and 4200 seriesAfter connecting a computer to the TV, set the screen resolution for the TV on the computer. Theoptimal resolution is 1366 x 768 @ 60 Hz. If it is set to any other than in the table below, the TV maydisplay nothing. Set the resolution properly, referring to the user guide of the computer or its graphiccard.IBMResolution(DotsxLines) Display FormatHorizontalFrequency(KHz)VerticalFrequency(Hz)Clock Frequency(MHz)Polarity(Horizontal/Vertical)720x400 70Hz 31.469 70.087 28.322 -/+MACResolution(DotsxLines) Display FormatHorizontalFrequency(KHz)VerticalFrequency(Hz)Clock Frequency(MHz)Polarity(Horizontal/Vertical)640x480 67Hz 35.000 66.667 30.240 -/-832x624 75Hz 49.726 74.551 57.284 -/-VESA DMTResolution(DotsxLines) Display FormatHorizontalFrequency(KHz)VerticalFrequency(Hz)Clock Frequency(MHz)Polarity(Horizontal/Vertical)640x480 60Hz 31.469 59.940 25.175 -/-640x480 72Hz 37.861 72.809 31.500 -/-640x480 75Hz 37.500 75.000 31.500 -/-800x600 60Hz 37.879 60.317 40.000 +/+800x600 72Hz 48.077 72.188 50.000 +/+800x600 75Hz 46.875 75.000 49.500 +/+1024x768 60Hz 48.363 60.004 65.000 -/-1024x768 70Hz 56.476 70.069 75.000 -/-1024x768 75Hz 60.023 75.029 78.750 +/+1280x720 60Hz 45.000 60.000 74.250 +/+1366x768 60Hz 47.712 59.790 85.500 +/+
