Have an old view sonic vx900 (~5yrs old). When you

1,check the lamp
2,check the lamp ballast
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RESET UR EEPROM

Very typical of View Sonic. Sounds like a back backlight or inverter. I would go to www.viewsonic.com and open up a RMA. Most view sonic screens have a 3 year warranty. They will repair at no cost ..(if it is within that period) There is a date code on the back of the screen that will help you validate the above information.

The problem of this unit is bad or bloated electrolytic capacitors like this image:
that is common to viewsonic monitor.

Here is a link for your View Sonic power supply:

http://www.shopzilla.com/laptop-power-adapters/viewsonic-power-supply/9177/products

It should have a replacement for you.

replace the logic board, not the power supply board. you can find logic board on ebay as low as $29...

Hi

Actually the common problem of viewsonic LCD monitor is bad electrolytic capacitor at primary, secondary & inverter area, if your lcd using power adaptor test the voltage out, use analog or digital tester range 50v dc, if the voltage out is accurate dont be sure to your adaptor working good, open it and find bad electrolytic capacitor inside. That is common problem of viewsonic LCD monitor could cause of display flashing then back to black after few seconds. Suspect inverter area lastly mainboard.

Gud Luck!

I have a Viewsonic Flat Screen - recently I turn it on and all I see is like tye dye colors across the monitor with a slight ghost images of windows trying to boot-up. What can I do to fix this. The monitor is about 1 1/2 year old.

no, Viewsonic has the part for sale 42.99 - free shipping. Easy to replace