Having problems with your Dell UltraSharp 1800FP 18.1" LCD Flat Panel Monitor ?

With VGA input the screen randomly flashes on and off

\015 Image is good when on. The on/off interval is random, between 0.5 to 2 seconds. If no video input is applied, the backlight stays on and the menu looks file. Therefore It's not the inverter board, nor the power supply board. It seems that the logic board blank the backlight thinking that the VGA signal is not available. All capacitors on the logic board checks out OK. Any suggestions?\015

Answers :

Power control chip of the VGA input screen is not controling the input settings
Repair Help & Product Troubleshooting for Dell UltraSharp 1800FP 18.1" LCD Flat Panel Monitor

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