Question about ViewSonic VX2235wm LCD Monitor

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LCD model viewSonic vx2235wm 6 months out of warranty, When powered up, the backlight will flash, but then screen is dark. The blue light at the bottom is on and Vista recognizes the monitor. Sometimes, I can push the 1/2 buttons and the backlight will flash, but it goes back to dark. I never see a computer image. If I turn off and on without the DVI connected, it is blue for awhile then goes into standby. I don't see any bad caps.

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Are you sure about no bad caps? The top of the caps have to be completely flat, and bad caps can also look normal but can have high ESR, you will need meter that can read ESR of the caps.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VX2235W/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Post the pictures of the board and caps.

Posted on Sep 06, 2010

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1 Answer

Viewsonic vx2235vm does not turn on


This really sounds like you have a power supply board that is having problems with the filter capacitors which are causing it to not start up correctly. Here is a like to a repair guide including video instructions showing how to open and repair the monitor.

http://www.ccl-la.com/blog/index.php/repairing-the-viewsonic-vx2235wm-lcm-monitor/

Part one of the video guide:

Feb 07, 2013 | ViewSonic VX2235wm LCD Monitor

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Hi, I have a ViewSonic VX2235mw LCD Monitor it was working fine then all of a sudden the screen turned off and now it wont turn back on. The power light is on and is Blue but no sign of life in the screen...


Hello,

This is a very common problem with this model after a few years of use. This problem is caused by a failure of the capacitors in the power supply board hat powers up the back lights in the monitor. When the back lights don't power up you get no display on the screen. Here is a link to a repair guide for that model that shows how to open the unit and what to look for and replace to repair the monitor.

http://www.ccl-la.com/blog/index.php/repairing-the-viewsonic-vx2235wm-lcm-monitor/

Here is part one of the three part video repair guide posted at the above link:


Jan 29, 2013 | ViewSonic VX2235wm LCD Monitor

1 Answer

LCD model viewSonic vx2235wm, screen is dark, no visual display. However, blue light at the bottowm is on.


It's a backlight or backlight inverter issue. (The backlight itself usually fades or makes the on-screen image change to pink/red.) For an out-of-warranty monitor, open up the back of the monitor and remove the shielding. Look for any scorch marks or bulging or damaged capacitors. (Sometimes other parts will fail on this part but these can be spotted easily. Capacitors look like cylinders on a tripod.)

If you borrow (or have a) high-end multimeter (able to measure high frequencies - 50 kHz) or an oscilloscope, hold the multimeter probes a fraction of an inch apart about an inch above the board and power up the monitor. If you see a 1 or an actual value, you have a good inverter. If you see a reading near 0, the board is bad or the multimeter can't resolve the frequency.

In either case, you can buy a replacement inverter for $50-150 and just do a simple swap. Disconnect all of the wires (connections are similar to molex and ribbon cables in a computer) and remove board (a few screws usually). Connect the cables to the new inverter. (If you google backlight inverter replacement, you'll find videos and text descriptions.) Note the part number on the board, including the Rev number, and order the exact one (shopjimmy.com or lcdparts.net are good starting points). Universal inverters do exist but can result in reversed controls (up to lower the brightness). Replacing individual parts on the board is cheaper but more prone to not tracking down all of the bad parts.

If the inverter is good, then it's probably backlights themselves (several in most TVs). These are sandwiched on the perimeter of the monitor (usually under some tape that holds the lamp, reflector and other parts together. You need to order by length and width and get ones for your monitor size. Remove the tape, and separate the reflector (make a note of how things are put together) then you have to Dremel (or use another rotary tool) to remove the plastic to get the backlight out. (They are often molded into the frame.) Then put in the new backlight and reassemble everything. (http://www.lcdparts.net/howto/default.aspx) but for an overview: http://www.inventgeek.com/Projects/BacklightFix/overview.aspx

With a good spare backlight, you can test an inverter for condition (plug together and turn on the tv while the box is open). Similarly a good inverter can test the backlight. With a bad backlight, you'll usually see a very dim image if you look at the monitor from an inch from the screen. Block the room light from overwhelming this image (sometimes a carefully positioned flashlight will help you see something). If the inverter or video board is bad, you will see nothing

I hope this helps.

Cindy Wells

Jul 27, 2010 | ViewSonic VX2235wm LCD Monitor

1 Answer

Extremely Dim/Dark ViewSonic Monitor


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Nov 13, 2009 | ViewSonic VX2235wm LCD Monitor

1 Answer

LCD screen went blank


Hello,

The Viewsonic VX2235WM has a known issue with the power supply going out. The flashing power light or not turning on is the classic symptoms of this issue. Check out our web site at: www.ccl-la.com. We have a step by step repair guide posted that will guide to doing the repair yourself. It involves changing a few capacitors on the power supply. If you can solder then you should be able to do the repair yourself. If you don't want to do the repair we do offer a repair service for $35 plus return shipping. If you have any additional questions just let us know at: tech@ccl-la.com

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

Buddy
Corporate Computer
www.ccl-la.com

Oct 22, 2009 | ViewSonic VX2235wm LCD Monitor

1 Answer

Hi have a Viewsonic 22 VX2245wm. When it was


Hello,

The Viewsonic VX2235WM has a known issue with the power supply going out. The flashing power light is the classic symptoms of this issue. Check out our web site at: www.ccl-la.com. We have a step by step repair guide posted that will guide to doing the repair yourself. It involves changing a few capacitors on the power supply. If you can solder then you should be able to do the repair yourself. If you don't want to do the repair we do offer a repair service for $35 plus return shipping. If you have any additional questions just let us know at: tech@ccl-la.com

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

Buddy
Corporate Computer
www.ccl-la.com


Jul 31, 2009 | ViewSonic VX2235wm LCD Monitor

1 Answer

White screen when power on view sonic 22'' lcd model # vx22335wm thanks


Hello,

The Viewsonic VX2235WM has a known issue with the power supply going out. The flashing power light or blank white screen are classic symptoms of this issue. Check out our web site at: www.ccl-la.com. We have a step by step repair guide posted that will guide to doing the repair yourself. It involves changing a few capacitors on the power supply. If you can solder then you should be able to do the repair yourself. If you don't want to do the repair we do offer a repair service for $35 plus return shipping. If you have any additional questions just let us know at: tech@ccl-la.com

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

Buddy
Corporate Computer
www.ccl-la.com


Apr 25, 2009 | ViewSonic VX2235wm LCD Monitor

1 Answer

View sonicvx2235wn


Hi.
Are you able to see a slight image on it at dusk and maybe with the help of a flashlight. since your blue light stays on the video board, may be okay.
If you can hear audio then your problem should be in the inverter board.
It could have bad capacitors or possibly a burned out transistor.
There is a chance one of your bulbs is creating a problem, but you would usually see a flash of the screen if that were the case.
Even though you do have sound the power board could still be the culprit.
Only way to really tell is to open it up.
If you unplug the screen to video board ribbon, you may notice a different effect in the screen lighting.
Should the screen happen to light up all white, then your inverter is okay.
If it looks pinkish or dark or flickers then the bulbs or a bulb may be the issue.
ebaysbammbammfran

Oct 12, 2008 | ViewSonic VX2235wm LCD Monitor

1 Answer

Problem with monitor


Hi.
Are you able to see a slight image on it at dusk and maybe with the help of a flashlight. since your blue light stays on the video board, may be okay.
It sounds like you have bad capacitors on your powerboard or possibly a burned out transistor on the inverter.

Only way to really tell is to open it up.
If you unplug the screen to video board ribbon, you may notice a different effect in the screen lighting.
There is a chance one of your bulbs is creating a problem
Should the screen happen to light up all white, then your power board and inverter are okay and the problem may be in the video board.
If it looks pinkish or dark or flickers then the bulbs or a bulb may be the issue.
If it flashes on then goes off, it's in the power or inverter board.

ebaysbammbammfran

Sep 14, 2008 | ViewSonic VX2235wm LCD Monitor

3 Answers

Hello viewsonic vx2235wm no power


this instructable might help http://www.instructables.com/id/How-to-repair-a-Westinghouse-L1975NW-19quot-LCD-/

the dac 19m009 is supposed to simular to the dac 19m005, which is repaired in the instructable.

Apr 28, 2008 | ViewSonic VX2235wm LCD Monitor

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