20 Most Recent ViewSonic VA712B 17" Flat Panel LCD Monitor Questions & Answers

check video cables

Did you physically drop your unit? What is wrong with the display? Please clarify and maybe I can answer your question.

here is the manual of your viewsonic VA712b

cold solder on micro panel fixed mytv

Look for bad caps in the power supply first:
http://s807.photobucket.com/albums/yy352/budm/VIEWSONIC/

Very common in ALL monitors as you cand see.

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/ Post back what you see inside so we can guide you further and it will help out other people in the future also.

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.

You can download user manual for your monitor here:
http://tom.viewsonic.com/pdf/userguides/va712b-2_ug_eng.pdf

You should try this monitor with another PC to find out if it is your PC problem or your monitor problem.

You are not geting the image may be due to bad backlights inverter circuits, check the fuse in the inverter circuits.
Are you hearing the noise from the AC adapter or from inside the monitor?

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: 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. Please leave rating if it helps.

It does the same on another PC?
More likely to be caps failure in the power supply section just like the VA912 (19" version) and the rest of Viewsonic as hswon in my albums.

If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SAMSUNG monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/ Post back what you see inside so we can guide you further and it will help out other people in the future also.

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.

I dont know the answer but i also got the same problem.. When i start my pc suddenly one flash will come in monitor and go. then i've to reboot my pc through switching off power and then on(Cause nothing in monitor i cant see anything for turn off or restart) then may be on 2nd or third reboot screen will come..

If you are going to DIY and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed VIEWSONIC monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

More likely to be caps problem in the power supply just like failed VIEWSONIC as shown here:

Basic LCD monitor troubleshooting guide:

http://www.fixya.com/support/r6147800-basic_guide_applied_most_lcd_monitors

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Please post back what you find.

The monitor have a power supply problem, take it to a approved technician for check.

Only resetting to factory default not resetting he EPROM. What is the problem with the monitor?
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed VIEWSONIC monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder jopints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed VIEWSONIC monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

wmtc348, If monitor screen is black, then most likely the problem is internal to the unit's "switchmode-power-supply/ cold-cahtode-fluorescent-lamp inverter power supply. You didn't state the "date of manufacture" from the rear of unit which is very important to give good better diagnosis. Do some reading in my (louie12fix) and (12fixlouie) Fixya profile and those of "budmrtn" and "buddymc" for more info on doing possible DIY or contracting out the repair work if unit is less than 4 years old. See if Viewsonic has a cash+old unit "swappout" program for your model. Also view some of the many DIY lcd monitor video clips that you will find on YOUTUBE to help you make "fix or trade for new" decision! DIY is $10 to $60 Contract repair is $40 to $90 depending on age and total hours of use unit has on it! Do some reading and view some videos first, before you do anything else!!! 12fixlouie

Did you check the Volume control panel of the PC to see if it is set to low setting. Try feeding the monitor with MP3 player or sound source to see if you get the sound OK. Post back what you ifnd.
http://s807.photobucket.com/home/budm/allalbums