Question about ViewSonic Optiquest Q19wb LCD Monitor

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Optiquest q9b-2 blank white screen (lights up when powered up) no video ??no problem with computer, video fine on another monitor, tried this monitor on several computers same problem, blank white screen.

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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

Good Luck!

Posted on Jun 13, 2010

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Posted on Jan 02, 2017

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1 Answer

MANUAL


HERE YOU GO:
http://www.2shared.com/document/DvXLz7b2/q9b-3_ug_eng.html

Dec 17, 2011 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Viewsonic optiquest flat panel lcd monitor power light flashes on and off with a popping niose


Look for bad caps with bulging/leaking tops as shown here:
http://s807.photobucket.com/albums/yy352/budm/OPTIQUEST/Optiquest%20Q9B/

Very common problem in all LCD monitors as you can see in my albums.

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.

Oct 26, 2011 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Optiquest q20wb LCD has black screen & green power light flashing


Hi Rickyknows2,
If you are not hearing any beep I assume you are having problem with your video so, please ...
- open your PC and check whether your video card is well placed (sometimes it looks fine but you never know) remove it and put it back.
- If you used to remove often the cable from the PC, it might be that the pins from the monitor cable are even broke... please check.
- try to find another video card and replace it just to make sure its the video ...
- last... reset the bios (but I doubt that this is your problem)
chsers ..

May 03, 2010 | ViewSonic OptiQuest Monitor

1 Answer

LCD doesn't power up, light just blinks


Look at the power supply first; look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find

Nov 27, 2009 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Fine white vertical line down the left side of the screen. It is always there I can't adjust out.


Does this white line show if the monitor is plugged into a different computer? If not, the graphics card in the computer might be bad or MAYBE the cable. If the line is still there on another machine, the monitor is broken. This likely means a fragile ribbon cable has been torn or damaged inside the monitor. It can rarely be fixed and is so fragile that most people further damage the cable when attempting to adjust it. Sorry about your luck.

Sep 14, 2009 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Monitor turns off and is dim


replace pwr inverter board...
replace the video/keyboard as well...

Feb 08, 2009 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

3 Answers

Replacing the inverter?


The Optiquest Q9b has had a high failure rate due to bad capacitors on the power inverter board. Usually you can tell if the
capacitors are bad by looking at them to see if the top is bulging, if they are leaking, or if the bottom plug is pushed out. If you can use a soldering iron, you can replace the bad capacitors yourself. If you can't use a soldering iron, you can quickly learn enough to do the job by watching a few videos on You Tube. Here are a couple examples of videos on soldering and desoldering. Watch a few videos on both topics and you'll be good to go.

I found this extremely helpful tutorial on how to replace bad capacitors on the Q9b. It tells you how to disassemble the monitor, find the right circuit board to fix, and the tools and supplies you"ll need. However, the tutorial assumes, incorrectly, that there is just one version of the power inverter board. So don't just take for granted that you have to replace the same capacitors shown or that they'll be the same exact type the tutorial specifies.
The best thing to do is to read the numbers off any bad capacitors you find and buy new "radial-lead electrolytic capacitors" at Radio Shack ($1.49 each) with the same micro-Farad rating and the same or higher voltage rating (those are the two numbers you'll find on the capacitors). You can also buy capacitors online; just do a search.

Of course there are other things that can go wrong with a Q9b, but bad capacitors seem to be by far the most common problem.

I hope this helps.

Dec 16, 2008 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Blank screen with intermittent operation


you have bad capacitors in the power board inside the monitor replace these and the monitor will work fine

Dec 09, 2008 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Monitor has a hard time starting up


replace the "keyboard board" and the "power inverter board" (both boards)....

Oct 09, 2008 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Not on


try eBay ressurectek for repairing you inverter/power supply board. If you have the one transformer (q9b-2) version, he says he can fix it.
tom

Sep 26, 2008 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

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