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I also have the same problem and finaly I found its power adopter faulty which gives the same voltage as mentioned above it but on load they dropped to 17 volts instead 19.
I used another supply and the monitor works normaly.so try this
carl_p90, I don't know what you are capable of doing in the matter of "checking" the unit's "switch-mode-power-supply/CCFL voltage INVERTER circuits"!!! I have responded to another VX910 that you should read first. (kimespinoza Nov 04, 2009) The only option I did not mention to her was to do the visual inspection for the possible FAILED electrolytic filter capacitors on the SMPS/inverter combo board! Visit YOUTUBE for cilps of "LCD monitor disassembly" and "LCD monitor repair" videos. The longer ones are more helpful! Also check out www.ccl-la.com/badcaps.htm to see what is involved in doing your own repair work if you discover BAD CAPS in your unit. Then get back here if you need some assistance. Tell us more about your VX910 such as age, approx total "on" hrs of use, and results of doing the "FLASHLIGHT TEST" that every LCD owner should know how to perform when encountering a non-sleep-mode BLACK-SCREEN of DEATH!!! I will be checking for a comment from you after you do some research on your problem. Here is a clue!! Do you own any of the NEW style CURLIE-Q screw-in CFL light bulbs! Same technology lights up your LCD PANEL!!! Only you have thin, straight lamps hung on rear of your panel. Bye for now. 12fixlouie
peterballeng, Read my other response on a viewsonic VX910 in my fixya profile. You will find out your options to the black screen of death you are having trouble with. Do you know how to do the simple flashlight test for SMPS evaluation of LCD monitor power supply status! 12fixlouie on fixya, aka louie12fix Pete, sounds like SMPS is in SHUTDOWN mode. Do a comment after your evaluation.
Kim, The LCD display requires WHITE light so you can see all the colors on the screen. Most BLACK screen problems will be a power supply problem internal to the monitor. I monitor is still under warranty, have Viewsonic repair it. Here are a few more options that could be available if unit is out of warranty. 1. Trade in for new widescreen display. Please note that the electronics technician at the store will evaluate your monitor and try to repair it for less than $10 in parts! He or she will keep it as a spare unit or sell your monitor for $40 - $60 to a buddy that needs a spare or second monitor. 2. Check to see if Viewsonic has a CASH+old unit swap-out program. They ship you a REFURBISHED same model unit w/ 30day warranty. Yes! They will REFURBISH your old monitor and ship it to another customer. But that's only if a swap program is in effect! 3. Check with a local TV/LCD monitor repair shop, to see if they refurbish LCD monitors with new or rebuilt "switch-mode-power-supply" / "inverter supply" / "cold-cathode-fluoiescent-lamps" . 4. Most costly option. Buy new display AND have your VX910 repaired and kept as spare unit! Before you do any of the above mentioned options visit (FYI) YOUTUBE and search for and view the longer (8-12 minute) video clips of "LCD monitor repair" and "LCD monitor disassembly" to learn what the most common causes of LCD BLACK SCREEN failure are and what parts are used to fix them. Also visit www.ccl-la.com/badcaps.htm and www.lcdparts.com , www.badcaps.net for more information. If your VX910 falls into the FAILED CCFL backlight catagory get back here to fixya and let us know what option you will persue. If this was helpful to you or someone else, rate this response on fixya. 12fixlouie by for now.
Replacing the fuse twice is OK but going beyond that doesn't make sense.
I don't know where the fuse is located in the circuit, AC input or some output point.
If it is the main AC fuse, the main power supply is probably faulty and one needs some experience to locate the shorted component.
If it is on the output side you have a shorted part and the above admonition applies; you need some training to know what you are looking for.
If the supply is on a separate board as is common, look for a part (assembly) number and do a search to see if there are companies offering repairs on that supply; if not, you may get stuck buying a new one and there is no guarantee that the supply didn't fail for a reason.
You could have a 'downstream' problem that killed the supply.