Question about ViewSonic VA550 15" Flat Panel LCD Monitor

Won't turn on, doesn't respond to Power button at all.

Confirmed I'm getting 12V, and there is a green LED inside on the video board that is lit. I'm not talking about the Power LED on the front. Pressing the power button does nothing. No sounds, no signs of any kind. No fishy or burnt smells, nothing physical that I can see. Cables all plugged in, and I went ahead and reseated them.

Joe Chuang Sep 17, 2008

Hey, I have exactly the same problem, anybody got a potential solution????

----------------
Hello guys and girls,

A friend of my just finished moving to the new apartment, but since he
was not able to move everything to the new apartment, I was given this
Viewsonic monitor.

However, upon trying to power on the monitor, I only found out that the
monitor would not power on, I know the external power brick to the LCD
panel works, because when I plug in the plug into the power strip,
there was a spark, and the green led light is also lit when plugged in,
but the monitor would not power on, no matter how many times I press
the power button, any insights on what could be the problem with the
monitor??

P.S I wouldn't mind opening up the panel, although it would definitely
be better to at least get an idea of where to start once I get the
monitor opened up....

Any helps are welcome

Thanks

-Joe
------------------

5 Related Answers

Anonymous

SOURCE: Monitor Continually Goes Blank

I had a similar problem with a Westinghouse 19" LCD. Had left power on while running errands, but came home to a black screen. I could cycle the power and see the desktop image but it would go black after 2-3 seconds.

Out of curiosity, after cycling the power, I immediately pressed the monitor settings button, and was able to get into the menu . . ., no black out . . . I changed the brightness setting and crossed my fingers while I let the setting menu time out . . ., lo and behold, it's working again.

Perhaps Mark could comment as to why this might have worked.

. . . and yes, I do feel lucky . . .

Posted on Apr 23, 2008

Jerry Greenberg

1691 Answers

SOURCE: VX900, Backlight Works, But no picture.

It is impossible to see defective components visualy, unless there was a serious burn-up or something like that.

Without at least a DVM you cannot even verify if the power supply is functioning properly!!!

There is no support at the component level service for these monitors. The service tech will change the main input board to solve the fault that you have. If the back plane lamps are failed, he will change the power supply for the back plane lamps. In some of these models, the back plane lamps are not replaceable. This means that the screen would have to be replaced.

If you want to service the monitor the non supported way, call Viewsonic and see if they will sell you a copy of the detailed schematics, and engineering data for the boards. Most monitor companies will not sell any schematics or service information to no authorized contractors for their service.

If you can have the details, get a digital scope, a DVM, a logic analyser, and start troubleshooting according to the service manual. This can involve hours of work to figure out the fault. Then you will have the task of seeing if Viewsonic will sell any of their proprietory EPROM's or processor type parts.

This is why when the warranty is finished on these monitors, they are not worth to send back for service. The shipping cost, plus the parts and labour can come out to more than the monitor is worth!

Jerry G.

Posted on May 19, 2008

Anonymous

9 Answers

SOURCE: I have viewsonic 1703wb monitor. Often Monitor power went off

Check the power cable. If it uses a power brick style assembly (like a laptop) it may need to be replaced. Some power bricks can break a wire at the base of the brick just enough that it causes a short in the system and shuts down the power flow.

Posted on Mar 19, 2009

Leroy Elliott

3085 Answers

SOURCE: ViewSonic LCD Monitor Went Blank

It is probably a bad INVERTER and / or backlight fluorescent bulb.

Posted on Jul 02, 2009

Buddy Mcsparrin

1684 Answers

SOURCE: ViewSonic Vx924 No power

Hello,

If youcan take a picture or two of the boards in your system as close and clear as you can and go to our web page and email them to me I will check and see if we can help you find the problem.

Buddy
Corporate Computer
www.ccl-la.com

Posted on Aug 14, 2009

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