Question about ViewSonic VP201b 20.1" LCD Monitor

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Hello, I have a viewsonic va712 monitor with no backlight. I think the problem is in the backlight inverter board. Do you have some information about the inverter board ? or the inverter scheme? Thanks, Jon

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  • 1111111117 May 06, 2009

    I have a viewsonic va712 monitor with no backlight. I think the problem is in the backlight inverter board. Do you have some information about the inverter board ? or the inverter scheme?
    Thanks,
    Jim

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Try eBay for those parts.

Posted on Feb 20, 2009

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Hi. I have a viewsonic model VA712. I suspect a failed backlight. What to do?


well if you don't see a lot , your backlight is dead:), easy to repair since you propably get 3 screens which fit when you search for it and every screen is just an oem.... :). except the special expensive once. Take notice if your screen connection is left or right sided and besides get it removed and placed is by unscrew some screw and then comes the uncliccing parts; Use some a sharp screwdriving(with some tape on it to avoid get ugly points).
It's just clickwork, don't be afraid to ruse some strength.
good luck

Sep 02, 2014 | ViewSonic Computers & Internet

1 Answer

Backlight problem


what is the problem? can you be more specific?

Dec 06, 2013 | ViewSonic VA712 17" LCD Monitor

1 Answer

I have va712 and when i turn on the monitor it turn on for second and after only the backlight turn off. what i can do?


You already check the cable and try this monitor with anopther PC already?
You may have problem with the AC adapter or the backlight inverter board problem, or bad backlight assemblies.
You need to verify that the AC adapter is putting out 19vdc under loaded condition.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Mar 24, 2011 | ViewSonic VA712 17" LCD Monitor

1 Answer

View sonic monitor VA712 doesn't display picture even after power supply light turns green


It may have blown fuse in the backlight inverter board, that will be the first place to look.
Post pictures if you can.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series

Dec 19, 2010 | ViewSonic VA712 17" LCD Monitor

1 Answer

My view sonic VA712 monitor doesn't display any picture even after power supply light shows green.


Hello Dear 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

Dec 19, 2010 | ViewSonic VA712 17" LCD Monitor

1 Answer

Hello, I ordered a Viewsonic VG2021m monitor a while ago, and recently, the monitor shows nothing but black when plugged in. All cables on it have been checked, and my computer acknowledges it is there,...


This is 2006 model year, more likely to have bad caps problem in the power supply, look for caps with leaking/bulging tops first, also look to see if you do have 12~18vdc feeding the inverter circuits.

This your power supply/backlight inverter board:
http://www.shopjimmy.com/power-supply-unit-dac-12m033-af-from-viewsonic-vg2021m.htm

Learn about bad caps and failed monitors here:
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Jun 09, 2010 | ViewSonic VG2021m LCD Monitor

1 Answer

I have Viewsonic VA712 monitor 17" i am not able to hear sound


Here is the user manual: http://www.viewsonic.com.au/support/manuals/files/LCD/Series%20A/VA712%20User%20Guide%20English.pdf
Make sure to hook up audio cable as shown to your PC.

Additionally you can try to download drivers for the same which can be found here http://ap.viewsonic.com/in/downloads/

Apr 21, 2010 | ViewSonic VA712 17" LCD Monitor

2 Answers

My VA712 does not turn on, when supply button (mains) not from front panel, switch ON it shows blank screen (no sign of turn on) but when repeatedly switch ON & Off it Turns On & shows the display....


bholesir, If unit covered by ViewSonic warranty, USE IT!!! The units "switch-mode-power-supply" is in need of service!! Unit WILL require inspection and repair of possible bad (poor quality soldering) soldering of electronic components to the prinded circuit cards and or need replacement of bad (poor quality) electrolytic filter capacitors on the unit's "switch-mode-power-supply"/"CCFL inverter circuit" that have failed!! Do a visit to YOUTUBE for "LCD monitor disassembly" and "LCD monitor repair" so you can familarize FYI with what is inside your monitor, and possibly make a decision to do a DIY repair or contract out the work to a local TV/LCD monitor repair shop. If your pocket is deep enough, maybe you will repair and buy a new unit, keeping VA712 as spare unit for a rainy day. Read more of my responses to other owners in my FIXYA profile for more options not mentioned here. Good luck with repair. 12fixlouie

Jan 27, 2010 | ViewSonic VA712 17" LCD Monitor

2 Answers

When I turn on my ViewSonic VA902b it flashes the


The problem can be in the backlight inverter circuits, look fo bad caps with bulging tops, look to see if you do have 12vdc feeding the inverter circuits. See some examples of failed monitors here: http://s807.photobucket.com/home/budm/allalbums

Jan 06, 2010 | ViewSonic VA902b 19" Monitor

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