Question about ViewSonic VP211b 21.3" LCD Monitor
I have repaired several of these Viewsonic VP211b monitors. In every case, the problem was a blown fuse on the inverter board. There are two fuses, F1 and F2. Either one can fail. The fuses are located on either side of the CN1 connector. These fuses are 1.5 mm long, 1.0 mm wide and 0.5 mm high (Case Style 1206). They have the letters FN printed on them. The N is for 2 Amps and the F is for Very Fast Blow.
The fuses were made by LittleFuse. The replacements were purchased from Newark Electronics. Part number 64R8010. This part number is the Fast blow 2.0 Amp (not the Very Fast blow), but they work fine.
The screen is illuminated with fluorescent back lights. Those back lights are powered by the inverter. If everything is working except the back lights, you should be able to see a faint image by shining a bright flashlight into the screen.
Posted on Mar 04, 2015
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Posted on Jan 02, 2017
Your monitor have a bad condensator in the PSU.
The only thing to do is to replace the Power Supply Unit (very expensive, more than a new monitor) or if you have electronic tools, found and replace that condensator.(cheaper way...)
Have you connected your monitor with a new power cord ?
Posted on Jun 29, 2009
Try this first. Unplug the monitor power. Let it set for a few seconds and then plug it back in. This corrects this problem most of the time. If that doesn't work, try doing the same thing with the video cable. Disconnect it from the PC and then reattach it. The connections may have gotten corroded and are not making a good contact.
Hope these help you. because beyond that you are looking at either replacing the monitor or the video card.
Posted on Dec 16, 2009
You need to check the fuses on the backlight inverter board, also the logic board may be damaged by the AC voltage. Basic LCD monitor troubleshooting guide: 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.
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 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 troubleshooting guide:
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.
Posted on Dec 02, 2010
SOURCE: my monitor blureed
Both suggestions are good starting points, but it may be an internal fault.
Other steps to try: check the signal cable -- wiggle it a bit at the PC end and at the monitor end, while watching the image on the monitor. Any change? If you have issues when moving the cable at the PC end, you may want to try shutting down the PC and disconnecting the monitor. Then clean the pins on the monitor's connector with 91%+ isopropyl alcohol and a cotton swab (make sure no cotton is left behind). let dry and try again.
If none of this make any difference, wait for the monitor to go dim. Then, gently smack it on all sides. If the image clears up or changes, there is likely an internal bad connection. Do not open the monitor unless you are familiar with all safety precautions involved.
I have the same monitor and I was having a similar problem. Turned out, there was a cracked solder joint on the signal board at the back of the CRT plus several more questionable ones.
Posted on Dec 07, 2010
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