Get a working monitor and turn on the computer. Then swap the monitor with VP201b.
Get a flash light closer to the screen to see whether you can see the desktop screen image. Yes? Then it is your backlight inverter.
Find a Youtube video to show you how to open the cover. Then look for any sign of broken capacitor(s). Replace them and then test your monitor. If all capacitors are okay, it is one of your FUSES. There are 2 tiny surface mount fuses ("FN" type). You can short the two ends to test it before removing them. Often only one of them is broken. Replace it and the monitor shall be okay now.
SOURCE: No display, green light on ViewSonic VP201b 20.1 LCD
I have two broken VP201 monitors with different symptoms. One was black screen green light - like yours. The other was purple speks flying all over the screen., purple tint.
I swapped the power supplies and display boards, both monitors had original problems. I swap the inverters and the monitor which was black screen now appeared to work okay - but slightly pink and the monitor which was purple speks is now black screen.
I would therefore assume that both my inverters gone, one being on it's way out. You probably have the black-screen case.
SOURCE: Viewsonic VG 900 displays briefly, then goes blank
What Usually causes these to go on and off quickly is one af a couple things.
Usually it is the powerboard not putting out enough power to run the video board and the inverter.
Sometimes it is the actual inverter board. I have seen a plain small fuse stop these cold.
Rarely, but it could be a bad bulb in the screen. Bad bulbs usually
start dark in the middle, or they start off pink. They can also flicker
while they are on.
If you can take it apart and have a dc tester, the problem may be able to be found.
I repair some viewsonics , mostly VXs series, but I have done a couple of these.
bammbammfran
SOURCE: Viewsonic VA903b Flashing green light (slow)
Hi..there,
It's seems you got a busted backlight inverter problems... Need replaced with a new one. Happy Holidays!
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