Screen got a quick white flash the goes blank everytime you press power button _ What caused that problem ?

Sounds like the cfl tubes are bad - they are like a shop florescent tubes very small that could be 2 to 4 tubes but most have just 2 - one on the top and one on the bottom that should also be replaced with the inverter - like changing your oil - a filter is replaced when you change your oil - this is not an easy task for the person that does not know much about electronics but can be done by yourself for about $50.00. The tubes last about 33,000 hours - on an average - 3 years but they could still go at any time - here is a site that will give you more information on it and show you how to do it yourself - keep in mind - your photo of the monitor may not be the same but the idea is the same for most monitors - you can get the tubes elsewhere for about $10.00 each not excluding shipping and they are very fragile - a slight bend and the tube is broke. Here is the site that will give you more information . They will have your tubes but you must take yours apart and measure the tube - they will show you how to do this also.
Hope this helped a little.
Kevin
[ here’s the link ]
http://store.lcdparts.net/