20 Most Recent ViewSonic VG2021m LCD Monitor Questions & Answers

Assuming you are using a windows operating system, go to the control panel under the start button. Find power settings and turn off hibernation mode. Sleep mode should be ok. Additionally, on the monitor, find the menu button that pulls up the OSD (on screen display) and see if there is a ECO mode or power saver mode and turn it off as well. Good Luck.

I'm glad I'm not the only one to have the same problem. Unlucky!! I cannot solve this problem too!! but I think I found some clue for you. please see the picture.
As you can see, there are only two boards behind the screen, one is the CONTROLLER BOARD - it has no problem at all, another one is the major problem, the POWER SUPPLY BOARD.

I thought the main problem came from POWER TRANSISTOR -40T03GP 703065 [Q205] - when we turn on the monitor this power transistor will make the heat until its body leakage sometimes it can pop two capacitors (as I describe in picture). I will try to change two power transistors (we can replace only leak one but for sure I think we should replace two of them) and two capacitors. I hope the result will make us happy, if not - I will come here and tell you again. Hope we are lucky!!

e131175 power ic numbers?

your monitor have 4 buttons in the right down. the first is for turn on or off the speakers ;)

I just work on one of this last wek with the same symptom, it turns out to be the logic board problem, not available any where.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/

You may have unstable DC due to bad caps as shown in my pictures here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/?action=view&current=DNS2197.jpg

Which can cause a lot of strange symptom.

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.

Bad cap can look normal but can have high ESR, I always replace them in a set, and you should use LOW ESR type with 105c rating since we are dealing with switching power supply here. Look at the bottom seals also.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/

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.

Hello,

The intermittent image, dark picture or no power are all indications of a failing power supply. If you can solder you should be able to repair your monitor. We have an article posted on our web site at: http://www.ccl-la.com/blog/index.php/repairing-the-westinghouse-lcm-20v5/ The post is about repairing the Westinghouse LCM-20V5 but they both use the same power supply board, the Delta DAC-12M033 so the information is the same. If you don't want to do the repair yourself we do offer a repair service for this model for $32 plus return shipping. More information on this service can be found here. http://www.ccl-la.com/blog/index.php/service-request-form/

I hope this information helps, if so please rate our solution.

CCL Tech
Corporate Computer
www.ccl-la.com

Hello,

You have a monitor with a failing power supply. The Viewsonic VG2021M monitor uses the DAC-12M033 power supply board. After several years of use the capacitors in the power supply start failing and not keeping a charge. The capacitors are on the output side of the power supply and help filter and stabilize the voltages. When they fail the power does not settle when you turn it on so you have to do the on/off/on/off to get it to start. If you can solder then you should be able to repair your monitor. Check out the article on our site at: http://www.ccl-la.com/blog/index.php/repairing-the-westinghouse-lcm-20v5/ it is for the Westinghouse LCM-20V5 but they both use the same board so the repair information is the same. If you don't want to do the repair yourself we do offer a repair service for this unit, it runs $32 plus shipping. You can get more information on this service here:
http://www.ccl-la.com/blog/index.php/service-request-form/

I hope this helps, if so please rate our solution.

CCL Tech
Corporate Computer
www.ccl-la.com

Hello Geoff,

The problem you are having is caused by a power supply board that is failing. Your monitor uses the Delta DAC-12M033 power supply board. We have a repair guide for the Westinghouse LCM-20V5 monitor that uses the same power supply board posted o our web site at: http://www.ccl-la.com/blog/index.php/repairing-the-westinghouse-lcm-20v5/ Check out the web article, it should get you back going again. If you don't want to do the repair yourself we do offer a repair service. We can get deatils on this service here: http://www.ccl-la.com/blog/index.php/service-request-form/

I hope this helps, if so please rate our solution.

CCL Tech
Corporate Computer
www.ccl-la.com

Did you varify that the sound card in the PC is working? You can try feeding the the monitor with sound source from MP3 player to see if you do get the sound OK or not, to have the sound circuits repair by the shop will not be worth it because the money will be better spent on good set of powered spekers system with better sound than the monitor built-in speakers.

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums http://en.wikipedia.org/wiki/Capacitor_plague

Look for bad DC filter caps first: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/

Read more here: http://www.badcaps.net/forum/showthread.php?t=7803
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

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

If the screen blinks on and off, first place to look will be the power supply, look for bad caps first, post back what you see so we can guide you further, see example of failed VIEWSONIC monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums