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Hi my scaleoview s20-1w has gone dark for a while i could get it going by turning it on and off approx. 10-20 times but now it's gone for good could you pinpoint the problem, i suspect the backlighter circutry.

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Look for bad caps (bulging/leaking) first since it is easy to see.
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 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.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

Posted on May 13, 2010

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Wont turn on It won't get past the start up page. It goes black


Hi,
There are approx 6 reasons why this might happen:
  1. The backlight has gone (Find a dark place and shine a torch into the screen and see if you can see an image in the background, if you see an image then the backlight has gone) - Needs a new backlight (Engineer to remove and fit) or have a new panel fitted.
  2. The panel has died - Need a new panel
  3. A cable has worked itself loose or is broken
  4. The inverter has gone - Need new inverter
  5. Long shot, the bios has got corrupted - Engineer could re-flash the bios
  6. Long shot, Mainboard onboard graphics has gone - Need new mainboard

My personal opinion is that the backlight or inverter has gone - Either way it needs to be opened up to repair it, consult a service centre and get a quote or repair it yourself if your up for it.

Thanks

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My acer 4520's screen is blank when i'm turning it on.


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There are approx 4 reasons why this might happen:

  1. The backlight has gone (Find a dark place and shine a torch into the screen and see if you can see an image in the background, if you see an image then the backlight has gone) - Needs a new backlight (Engineer to remove and fit) or have a new panel fitted.
  2. The panel has died - Need a new panel
  3. A cable has worked itself loose or is broken
  4. The inverter has gone - Need new inverter
  5. Long shot, the bios has got corrupted - Engineer could re-flash the bios
  6. Long shot, Mainboard onboard graphics has gone - Need new mainboard
My personal opinion is that the backlight or inverter has gone - Either way it needs to be opened up to repair it, consult a service centre and get a quote or repair it yourself if your up for it.

Thanks

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Hi,

There are approx 6 reasons why this might happen:

  1. The backlight has gone (Find a dark place and shine a torch into the screen and see if you can see an image in the background, if you see an image then the backlight has gone) - Needs a new backlight (Engineer to remove and fit) or have a new panel fitted.
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Go to a computer fair and get a flat screen monitor for around $195 dollars. Why even keep this anicent artifact in todays new screens?

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Westinghouse lcd w32701


This sounds like bad inverter board.
Every time LCD goes from Standby to ON state - Inverter Board resets it’s self for approx. ~1 sec, during which time you should see blue screen.
Problem is that board detects problem with voltage/current on one of the seven transformers and shuts down automatically...
As to the costs:
- BestBuy repair service approx.. $600.00
- Buy new Inverter Board & repair LCD your self approx. $200.00
- Another option is to repair Inverter Board, but parts are sometimes hard to get...
Now for the DON"T TRY THIS AT HOME or AT YOUR OWN RISK solution:
-The cheapest method is to bypass protection circuit, by transferring good signal from working transformer (using 10nF/250V capacitor) to detection circuit at the faulty transformer.
Then watch movies on your LCD unlit BAD transformer totally BURNS-OUT.
This will be obvious by dark stripe about 1"-2" tall across your display.
Hopefully the only damage will be to the transformer and not CCFL (light behind your LCD), but when you are faced with a choice of using it for a while longer or throwing your LCD to garbage right now... to me this choice was simple.
Good LUCK.

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