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My monitor powers up then screen goes white X2Gen MW22U Monitor

It is most likley the cfl tubes - and - or - the inverter is bad. This will happen sooner or later with all lcd monitors that do not have the L.E.D. back lights. It is very frustrating and timely to replace the items yourself unles you absolutly know what you are doing. You should replace the inverter board with the tubes - it is recomended. I see this problem all the time. Samsung has the L.E.D. backlight and not cfl. The total cost of the DIY [ do it yourself ] will bee about $9.00 per tube [ most use 2 - some have 4 ] and about $15.00 for the inverter board - again - the inverter board could be higher if it uses 4 tubes and prices do not include a hefty shipping fee. Here is a sample link to read and a DIY document with tube sorce.http://store.lcdparts.net/ . Now the prices at this site are expensive - they also cover LCD cfl BACKLIGHT TV's - you can search the web for the proper tube but again - the tubes are like a shop light floresent tube in a really small package and very - very fragile and eay to break. Here is the site and it will explain more for you and guide you along for a reference.http://store.lcdparts.net/ . Once you have figured out a few things - try buying the items elswere . A standard 14" lcd monitor wit 2 tubes and an inverter will cost you a min. of about $50.00 + or - if you shop around. Hope this helped you a little and here is the LCD Backlight Link. http://store.lcdparts.net/ Kevin

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My viewsonic VP930b-3 LCD monitor went too dark even I put the maximun brigthness, then I tried to use " Memory Recall" function in set up menu. The monitor will show up in good collor ( bright - shape) in about 2 second then dark again. Any idea about this problem? Please help. Thanks


Based on the specs it looks like this monitor is a CFL type and not a LED type. That means it uses a inverter to power the CFL tubes in the LCD. Usually these go bad after awhile.. usually the capacitors on the board run dry or go bad and need to be replaced. If your not good with soldering you might be able to find a board to replace it with.. more then likely given the monitor size "small" the inverter board is usually built-in on to the power supply board or mainboard and will need to be replaced together but some times comes seperate as it's own board. You might just consider replacing the monitor, LED monitors are pretty cheap now a days and more energy efficient.. and should last longer then most CFL type monitors because they don't use as much current and don't produce as much heat and LEDs tend to last longer with out the yellowing effect of CFLs. However it really comes down to build quality & component quality. While the most likely cause is a bad inverter other things can cause this too..like a bad mainboard sending voltage signal lower then normal to the inverter board.

Nov 04, 2013 | ViewSonic VX2235wm LCD Monitor

1 Answer

blank screen when turned on.sound is fine though.when i use external monitor it works on the external monitor.


Hi. I have 2 units of T23, 1 unit T22 and T30. All of them has the same problem as yours. 3 units has bad inverter and the other 1 has bad CFL. Inverters can be replaced but if you have bad CFL, it is better to replace LCD screen. If your problem is CFL, you will be able to see a very faint image on your LCD screen. If the LCD is completely black and you can't see anything, then it is an inverter problem.

Inverter is located below the LCD screen. You need to remove the LCD face plate to access the inverter. Please click here for the step-by-step instruction how to access the inverter or replace the LCD screen. Inverter and LCD are available at ebay.

Note: T23 has thin plastic parts that can be easily broken when disassembling.

Good Luck. Let me know further.



Jun 28, 2010 | IBM ThinkPad T23 2647 Notebook

1 Answer

My X2gen MW19R monitor goes to black while I am working. I have checked the connections and they seem to be tight. What is causing this to happen? When it happens I turn the screen off, then back on to see the information again, only to have it turn to black in anywhere from 2 to 30 minutes.


It is most likley the cfl tubes - and - or - the inverter is bad. This will happen sooner or later with all lcd monitors that do not have the L.E.D. back lights. It is very frustrating and timely to replace the items yourself unles you absolutly know what you are doing. You should replace the inverter board with the tubes - it is recomended. I see this problem all the time. Samsung has the L.E.D. backlight and not cfl. The total cost of the DIY [ do it yourself ] will bee about $9.00 per tube [ most use 2 - some have 4 ] and about $15.00 for the inverter board - again - the inverter board could be higher if it uses 4 tubes and prices do not include a hefty shipping fee. Here is a sample link to read and a DIY document with tube sorce.http://store.lcdparts.net/ . Now the prices at this site are expensive - they also cover LCD cfl BACKLIGHT TV's - you can search the web for the proper tube but again - the tubes are like a shop light floresent tube in a really small package and very - very fragile and eay to break. Here is the site and it will explain more for you and guide you along for a reference.http://store.lcdparts.net/ . Once you have figured out a few things - try buying the items elswere . A standard 14" lcd monitor wit 2 tubes and an inverter will cost you a min. of about $50.00 + or - if you shop around. Hope this helped you a little and here is the LCD Backlight Link. http://store.lcdparts.net/ Kevin

Oct 29, 2009 | X2Gen MW22U Monitor

1 Answer

monitor is not working anymore what do i do?(black screen


Possible that the HV inverter or the CFL tubes are going bad / defective. I suggest to bring the unit to an authorized (BenQ) service center for proper check-up / test & fix the problem. regards

Apr 19, 2009 | BenQ FP731 17" LCD Monitor

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