Question: How do you test and/or repair a LCD monitor.? I have a ViewSonic VA720, the power light comes on and stays on, but I can not make out any displays.  The monitor worked one day and not the next.  I know I can replace th Backlight Inverter would cost about $80 after shipping.  Any way I can know if a new inverter board would fix the problem.  Or at the least someone who could test the board before shelling out 80 clams.\n\nThe Details:\nMfg  ViewSonic\nModel  VA720  VLCDSZ3895-3W\n\nThe Symptoms:\nPower indicates on\nNo picture\nPicture did not dim over time\nWorked one day not the next\n\nWill $80 fix it?\nLess?\nMore?\nDepends?  \n\nI guess as a last resort I can track down a used model, swap parts, and diagnose.  Any tips of the trade would be appreciated.

Answer: The classic diagnosis for back light failure IS shining a light onto the tft to see if you can see anything.\n\nI think your backlight has gone - so go with this
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