Question about ViewSonic VP920b 19" LCD Monitor

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Viewsonic vp930b-3 My viewsonic vp930b-3 lcd monitor does not show anything, the screen is just blank but the little green light next to the power button keeps blinking. i don't know what could be wrong with it. Pliz help. I´ve got the complete same problem. The sreen is blank and the green light is blinking - i have a viewsonic 930-3 monitor. I would be gratefull if someone knows what to do

Posted by jeanny001 on

  • dminges Aug 26, 2008

    My VP930b has the same/similar problem. When the power button is pressed, the screen does not light up and the green power light flashes a long-short-long pattern. With the DVI cable disconnected, the pattern is an even on-off-on. At no time does the display light, even when the menu buttons are pressed.

  • kagali2000 Sep 09, 2008

    view sonic vg 930m lcd monitor does not switch on..only it blinks blue light from the power on switch, also screen flashes when it does that and it never stops doing it. any idea?



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MY VP930b has the same problem.
It takes a very long time (5-10 minutes) before it becomes normal.

Posted on Sep 01, 2008


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My monitor dont come on, and green light flashng, viewsonic vp930b.

If your ViewSonic LCD monitor has stopped working with a blinking green power button, It typically means that there is one or more failed capacitors in the monitor. It would be best to send the monitor in to Viewsonic for service or to purchase a new monitor.

Mar 11, 2011 | ViewSonic VP930b 19" LCD Monitor

1 Answer

The screen is black and power led is blinking green

I will assume that you have already tried it on another PC, just want to narrow down the problem before taking the monitor apart.
Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, 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 and other monitors to get some ideas what goes wrong:
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Apr 06, 2010 | ViewSonic VP930b 19" LCD Monitor

1 Answer

I have a VP930b. Nothing on the screen. Power light blinks. Any ideas...


Blinking power lights usually indicate a failure in the power supply. What is happening is the power supply tries to start up and then shorts and turns off then it repeats. The most likely cause of the power supply failure is blown capacitors. We have an article posted on our web site at: that explains what capacitors are and what to look for when repairing your monitor. If you don't want to do the repair yourself we do offer a repair service, more information about this service can be found here:

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

Corporate Computer

Mar 09, 2010 | ViewSonic VP930b 19" LCD Monitor

1 Answer

No true black appears to be available

Try this:

Turn the monitor on. Make a background picture of a black and white checkerboard pattern.

Press and hold the 1, up and down buttons. A small icon will eventually show on the display and the monitor will do a white ballance.

It can be hard to get the monitor to do this sometimes. Just keep trying until it works.

Note, you should open the monitor and look at the caps in the power circuit. They may need to be replaced. Better now than later.

Apr 11, 2009 | ViewSonic VP930b 19" LCD Monitor

1 Answer

ViewSonc VX924 LCD Monitor

Check the information at Viewsonic's website regarding their warranty:

If you have your proof-of-purchase and it shows the monitor is less than a year old, it would be covered. You would need to follow the procedure on their website to have the unit repaired or replaced, but it would not be your job to try to fix it.

Feb 11, 2009 | ViewSonic VX910 19" LCD Monitor

2 Answers

30 bad VP930B's may have green LED for an instant that's it. No display either.

Yes this is a very common problem on the VP930b. The fault is with the crappy CapXon capacitors (worst in the industry). As mentioned above, replace the [email protected] and [email protected] capacitors. The other two never go bad. Make sure you replace the four above even if they look good. I would recommend using 35V and 25V respectively.

Note, if your monitor serial number starts with Q8H you may have a bad IC on the main board. Q8 often goes bad a few months after the capacitors do. If they are warranty they will have to be sent to Viewsonic or a local authorized service center.
If not warranty, you can solder a wire from the 3 pins on the left side of the IC to the four pins on the right side. One pin on the left side is the on/off pin for this IC and should be left alone. This will bypass the IC allowing +5V to the LCD all the time. However, if the monitor ever shows scrambled graphics after turning it on then turn it off using the main power switch in the back and turn it back on, it should be fine.

Sep 10, 2008 | ViewSonic VP930b 19" LCD Monitor

6 Answers

Viewsonic vp930b-3

Just as an FYI I have had the same problem with two of these units. Both purchased at the same time. First one went and would not come out of standby for a long period of time, then would not display on boot up. About 3 months after the first one started having the problem the second one was doing the same. Upon taking apart the second one I noticed two capacitors (250 micro farad, 25 volts) on the power supply at the connector going to the main board had a bulge. I decided to take the first monitor apart as well and the same two capacitors had problems. I replaced these with new capacitors and both monitors are now working like new. So in this case it was a power supply issue not allowing the monitors to wake up. This makes some sense since the problem started slowly at first then got worse and worse over time until there was no display no matter how long I waited. Since both were out of warranty I had nothing to lose. Hope this helps.

Jul 17, 2008 | ViewSonic VX2235wm LCD Monitor

18 Answers

17" veiwsonic power blinking green

The flashing green power button is a well known electronic problem with this (and other) Viewsonic LCD monitors. There is a YouTube video (do a search) showing how to disassemble the VX924 and find out whether the problem is related to blown capacitors. When I took my VX922 apart I discovered 6 bad capacitors out of a total of 7 on the power supply circuit board.Only recommended for those handy with a soldering iron.

Jul 28, 2007 | ViewSonic VX922 19" Monitor Flat Panel

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