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Backlight Failure I wonder if anyone can provide me with a contact that can repair the above device. The backlight on the lcd screen has failed. Thanks

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Re: Backlight Failure

Mitsui, here is the wasp home site maybe you can send it in on an RMA and get them to repair it. Good Luck, Tim

Posted on Feb 09, 2007

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Hi, My dx8 camcorder has suddenly developed a fault where the screen fades after about 10 seconds. I tried replacing thebattery after charging it up as well as changed the memory card in case I hadnt...

Hi there,
from what you are describing it seems that there is a fault with the LCD panel of your camcorder. There could be 2 points of failure here the backlight for your LCD screen or the Crystal Display itself is almost dead.
As with any electronic device sometimes you can never tell what's going to happen. You can bring this camcorder to it's nearest repair center If you can provide the model number I could probably help you locating one nearest you. However LCD replacements most of time are costly and by just adding a few more bucks it can get you a new one.
Hope this helps!

Aug 31, 2011 | Barcode Scanners

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My screen has gone very dark - what do I need to do to brighten the screen

You don't give any information about your computer, and that makes it hard to give a precise answer. But if you have a laptop, or you're having this trouble with an LCD monitor on a desktop computer, the display backlight may have quit working. Without the backlight you can only very dimly see the display. The usual reason is that the inverter board (in a laptop) or power supply (desktop monitor) isn't working.

Laptop inverter boards are pretty simple to replace, and you can find them for most brands and models now at reasonable cost. Check eBay where there are many sellers. Once you have the replacement, you just need to remove the front bezel of the display, which usually means taking out screws at the corners and releasing snap tabs around the edges. The inverter board mounts below the display panel and there are two cables connected. Unplug the cables, remove the old inverter, put the new one in and reconnect the cables and you're done. The brightness should be back to normal. (It's also possible but less common for the backlight lamp in the LCD panel itself to be bad. While it is possible to replace the lamp it is very difficult to do. It's usually simpler and safer to replace the whole display panel, although they can be expensive.)

In a desktop monitor, bad capacitors in the power supply often cause the backlight to go out. Many sites show what bad capacitors look like and describe how to remove and replace bad ones. It's a more difficult repair than the laptop inverter replacement, involving soldering on the circuit board, but it's still something you might be able to yourself.

Good luck, and thanks for using FIxya!

Aug 06, 2011 | Barcode Scanners

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My Viewsonic VA1912wb-3 Is not in worranty.. But I am suffering to problem that dark black screen with no diplay message. power supply is ok. pls help me to solve on my own..thank u

Most likely, it's a backlight or backlight inverter issue. (The backlight itself usually fades or makes the on-screen image change to pink/red.) With a bad backlight, you'll usually see a very dim image if you look at the TV 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. For an out-of-warranty TV, open up the back of the TV 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.) The scorch mark and smoke may indicate a resistor or zener diode that had been used as a fuse and is now gone.

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 inverter board and power up the TV. 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 ( or 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 TV (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 TV size. Separate the panel from the bezel. 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. See for more information but for an overview: Then push the new backlights into place, reconnect the wires and close up the sandwich of tape and other parts around the screen. Then replace it in the bezel.

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.

I hope this helps.

Cindy Wells

Nov 27, 2010 | Barcode Scanners

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My Acer laptop screen is blank but the power is still on. I tried the fn key to brighten the screen but that did not work. Also I cannot shut the off the power with the power button. I tried touching the...

Seems that the Backlight is not working any more.To enable it please try Fn+F6 .The brightness can also be adjusted with Fn+Right Arrow.If you can use a flash light on the LCD and then if you are able to see the screen, then the LCD backlight is not working anymore,Please contact Acer for a Warranty repair if you have a Warranty.

Oct 25, 2010 | Barcode Scanners

2 Answers

Dear sir, i purchase a laptop Acer model no. E-725-441G25MI. display dim problem in this laptop. I was submit this in your service center Digitus Electronic,Vashisht Complex, Sikanderpur, Gurgaon...

If you cannot fix the internal screen, or backlight and/or inveter, then, you may still be able to use the laptop with an External screen, plugged into it. This is of course IF the problem is NOT with your VGA card inside. However if it is OK then that would work.
If it is the VGA card, then this too can be easily replaced, usually the replacement simply plugs into a slot inside the laptop.

Whenever a screen is dull, as long as it is NOT the VGA card itself, then it is usually the backlight, or the Inverter, or both.
Sometimes it can be the actual LCD panel itself.
None of those faults above, are difficult to repair, as long as one has the parts and a service and repair manual.

Sep 21, 2010 | Barcode Scanners

1 Answer

Has a Toshiba Tecra 9000 won't power up. Power light on front is blanking which appears to be a code 3-3-2

The problem is cause due to one of the following: the backlight or the display, check your monitor brightness settings. Sometimes your brightness may accidentally have been all the way turned down, resulting in a blank/dark screen. The monitor controls are on the keyboard, directly above the numeric keys.
Look closely at your laptop's screen if the steps do not restore power to it and if it remains blank. Can you see a faint image on the screen? If so, the backlight may be off due to the LCD "lid close" detector malfunctioning. This malfunction likely happened due to the lid close switch being stuck in the "closed" position even though the lid is open. The switch is located beside the LCD's screen hinges, and tapping the switch a few times should unstick it.
Use an S-Video cable and plug your laptop up to an external monitor, such as your television set. With the laptop and TV hooked up, turn both on and see if your computer's desktop is displayed on the TV. You can also use a fifteen ( 15 )pin monitor desktop monitor by connecting it to the blue fifteen ( 15 ) connector at the side of the laptop if you cannot see anything on screen it is the display problem. If it is, your laptop's display needs to be replaced. If not, your motherboard and/or video subsystem may need to be completely removed and replaced.

Aug 31, 2010 | Barcode Scanners

1 Answer

The backlight isn't turning on

Hello, try to reset to device to deaut settings by clean boot files provided at website or send it for repair.
In my opinion is this an hardware error.

Jun 28, 2010 | Zebra Symbol MC70 Wireless Enterprise...

1 Answer

Beoken backlight

u kant
u will have to get another screen 4 ur psp

Nov 18, 2008 | Sony ACY-BR81/OB

1 Answer

Broken screen

u need to get another screen fo ur psp

simple and easy

Nov 18, 2008 | Sony ACY-BR81/OB

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