The "sleep mode" is probably set too low.. or a "power saving" mode is set too cut off too quick..(sorry for the low information) .. I am at work on an Apple.. geeezzzz :(
SOURCE: 924x
It sounds to me like your losing the high voltage on the inverter board after the board warms up.Could be the transformer or a capacitor on the inverter brd.
SOURCE: 924x
having the same exact problem...it started with the green led power light flickering and it would take a long time to come up and then it got progressively worse...now the led light flickers red, yellow, green and the screen displays white lines randomly as the led light flickers...seriously doubt that the monitor is repairable....paid $500+ bucks for this sucker and have only had it for 1.5 years...have 3 CRT monitors that only cost $100 bucks from the mid 90's that are all still running strong (none are ViewSonic monitors), so needless to say we are very very disappointed in the QUALITY of ViewSonic Products. Our Company Will Avoid ViewSonic Porducts at all Costs in the Future!
SOURCE: ViewSonic VA912b (Back light with blank dark screen)!
I have the same problem. If the computer goes into power save mode for the monitor the VA912b won't come back on. The LED blinks and it makes a repeating "bloop" noise.
I have no solution other then what was stated. Turn it off for several minutes and turn it back on. Sometimes you have to try this repeatedly before it works. (I have two VA912b monitors that I bought at the same time and both are connected to the same pc - this only happens to one of them)
SOURCE: ViewSonic VX922 monitor - black screen - green power light flashes
Got an RMA number within 24 hours of first email, they sent courier to grab old one in 2 days, and replacement arrived within 6 days of original being picked up with no cost to me. Very happy with that. Also all dead pixels fixed!! Yay!!
Hi hope your monitor issue has resolved. I would suspect the
problem is a hardware issue then a software setting. Since the monitor is over
three and half years old, if your monitor is a LCD with CCFL back light and had
been used almost every day, there may be 3 possible hardware issues. First is
the internal power supply, that can go wrong due to heating problem within the
monitor, this problem usually cause the monitor to display poor quality picture
and may show interference lines on screen prior failure. Secondly, it may be
the inverter that drives the back light, which may fail due to the safety
circuit kicks in, because it involves with high voltages. Thirdly it may be the
backlight itself, which is like most compact CCFL energy saving lamps that
flickers or turn itself off when it reaches the end of its service life. This problem
usually caused the monitor to show redness or yellowness images prior failure.
All of these can be resolved by qualified electronic repairers, all the best.
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