Question about ViewSonic Optiquest Q19wb LCD Monitor
My Optiquest Q9B-2 Monitor has started taking a long time to show the display after turning it on. I usually turn the monitor off when I'm away from the computer for long times. Lately, when I turn the monitor back on, the power light blinks - like it does when the computer goes into monitor off mode. It seems to take a minute or more before the display finally lights up. I set the computer screen saver to not turn off the monitor (as a test), and when the monitor finally showed the picture, the screen saver was still working just fine. Conclusion - something is going wrong with the monitor itself. I've tried wiggling the data cable - no help. Is this thing dying?
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Posted on Jan 02, 2017
Probable source of the problem is the horizontal output (and high voltage) circuit although it can be killing the video earlier than that too.
First step would be to dis- and reconnect the video cable to ensure it isn't a simple contact problem.
Second, using the brightness and contrast controls to see if anything is still visible. If you have a single horizontal line across the screen, then the problem is in the vertical deflection circuit instead.
If you have nothing, turn the monitor off, wait a few seconds and then back on. If you get a picture first then only a dot, its back to the horizontal circuit again. Try to note how it dies.
You may be able to somewhat diagnose the problem this way but that is a long way from a repair and with the cost of labor and possible unavailability of some parts, you should get an estimate before repairing it since it is possible that replacing it is cheaper. This is not really a DIY project unless you have technical background and a couple of test instruments.
Posted on Nov 01, 2008
Sounds like that monitor has reached the end of the road. I would recommend purchasing another monitor, other than view sonic. Purchase a Dell..they are great!
Posted on May 14, 2009
Look at the board where the AC power connector comes in that is the power supply board, there are more than one versions so it nay not have the same caps value.
Most common failures 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/Optiquest 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.
Post pictures or send them to me firstname.lastname@example.org
Posted on May 17, 2010
Often problems with LCD monitors can be traced to bad capacitors. The following sites will help you identify if your monitor has bad capacitors, and how to replace them.
www.fixyourmonitor.com and http://www.youtube.com/watch?v=9Q6_TgNJvQw
Posted on Jun 13, 2010
Tips for a great answer:
Basic LCD monitor and TV troubleshooting guide:
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.
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