Question about Westinghouse 19" Widescreen Flat Panel LCD Monitor

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Monitor goes dark... can still see the screen faintly, have to turn the monitor on and off to get the picture to " stick"..

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Ok, we have two options here, either the power inverter that turns on the backlight has stoped working or the backlight itself is not working. in these both situations, the best for you will be to ask to a local technician to replace it for you. but you may want to verify first if it's worth it to repair due to the low prices on lcd monitors nowadays.

Posted on Dec 12, 2009

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Very dim display..so dark that all I see is a faint picture. Are bad capacitors to blame?


I would say either the video cable has disconneted, causeing the led that lights the screen up to not function,, simpley take the bezel around the screen, take the small screws aroud the screen to slightley pull the screen away from the back top to see if the cable is, or has pulled loose...If now the screen is bad..

Oct 13, 2014 | Samsung SyncMaster 930B 19" LCD Flat Panel...

1 Answer

I have lenovo g550...my screen flickers in every 5minutes...


Failing Inverter An inverter, typically found inside a laptop computer, consists of a small board, which has impregnated electronic circuits stamped on it. Inverters look like thin boards about the of two sticks of chewing gum. The inverter and its bulb control the intensity of the liquid crystal display, which lights the screen monitor. The computer can control the output voltage of the inverter and either lighten or darken the screen. A special type of inverter can adjust the brightness of the screen by using an internal sensor to judge the room brightness, and then adjust the screen accordingly. Failing inverters give off some specific warning signs, which can be recognized by observing different screen characteristics.

Short Intermittent Display Upon turning on the laptop, the screen flashes on in the normal mode for a short period and then blinks to black. A very faint image appears in a dark background, which will be very hard to see almost invisible. After shutting off the laptop and restarting, the same mode occurs, where the screen appears normal for a few seconds then fades to black. This condition points to a failed inverter. To confirm this, plug in an operational external monitor; if the external monitor functions, the inverter has failed. b> Total Blackout with Ghost image b> The laptop turns on, as indicated by the power supply button, but the screen comes up black. The screen comes up black after restart. You might be able to detect a very dim or ghost-like image on the monitor. When you plug in a known functioning external monitor, the external monitor operates normally. This mode of display indicates a failed inverter. b> Long Term Periodic Operation b> With this failure mode, the laptop screen illuminates normally upon start-up and remains that way after several minutes, hours or even days, until it goes very dark again. Brightness controls or restoration attempts do not work. Most often, the screen will function normally with a computer restart, but will eventually return to black. Faint ghost images might appear, as seen in the total blackout mode. b> Dark With Color Variation b> Upon computer start-up, the monitor shows black or dark gray, accompanied by very faint images. The screen might have an intermittent color change, or remain on with a non-standard color variation, like pink or red. b> Auto Control Switch b> If the screen appears black, with no faint or ghost images, look for the lid switch near the back hinge. The switch, when depressed with a closed lid, shuts off the computer and monitor functions. Sometimes the switch becomes stuck in the closed position, disallowing the computer and monitor to turn on when opened. Pushing the switch manually several times can often free it up. If the switch tab has broken or jammed inside the case, it needs replacing. b> Loose Connection In this mode, the display looks normal upon start-up, but tapping the side case of the computer turns the screen black. More tapping results in the screen functioning normally then cutting out again. This condition points to a loose wire connection from the inverter to the LCD backlight lamp, or the video cable. The connectors can be accessed by removing the monitor bezel screws and pulling the plastic retainer off. Both connectors can be cleaned and refitted.

Feb 10, 2013 | Lenovo G550 PC Notebook

4 Answers

On my Acer AL1916W monitor the screen comes on for a few seconds then goes off but the power light is still green.


Hi.

That is often an inverter failure. Try turning off the room light, and point a flashlight sticking to the dark screen. If you can see a very faint picture, then the inverter has failed.
Before replacing the inverter, the PSU must also be tested. If the PSU does not supply power to inverter, then the PSU and not the inverter is the part to be tested.

If the screen is not dark, but there is backlight and no picture, then the problem is not the inverter. In that case check the source and the connection cable. If the cable is OK, then it is usually the main controller board inside the monitor. Once again the part must be tested.

Regards.

Ginko.

Mar 10, 2011 | Acer AL1916W 19" LCD Monitor

1 Answer

DELL 2208WFP LCD-Comes on normally, but almost immediately goes dark You can see something on the screen if you look closely. Turn it off and back on you see it then dark. any help?


Hello,

I believe the power led button is still on while the screen goes dark, if yes, it means the picture board of your monitor is bad that is why it appears for a second and goes dark after that

Since the power led button is on, It means the picture board on your monitor is faulty that is why it appears for a second and goes dark.

The best thing for you to do now is to take the monitor to a local repairer or any service center within your vicinity to help with the replacement of the picture board because the fault is not something you can fix yourself in other to complicate issues.

Take care.

May 01, 2010 | Dell UltraSharp 2208WFP 22" Widescreen LCD...

3 Answers

Screen comes on then goes out in 5 seconds. The backlight goes dark but the seen is working, just can't see it. The backlight is out...


mark587, Did you shine a very bright flashlight 1" from the screen to try and see the WIN-desktop ?? Even though the screen appears BLACK. Your words above said: JUST CAN'T SEE IT Did you really NOT see anything? Have you seen any of the longer video clips of "LCD Monitor Disassembly" on YOUTUBE? Some BLACK screen "symptom" lcd displays can be repaired for less than $10 in parts. Capacitors! Also check videos on lcd repair. Then get back here to fixya and I or any of the guys can help you decide what to do with your display whoose screen is now dark and lifeless. After doing the YOUTUBE thing you may even tell us what you will do!!! Hope this was helpful. Yes we do want to hear back from you. please rate this response on fixya. I'm louie12fix on fixya or lmistyrel @ aol.com. Bye for now.

Oct 07, 2009 | Dell E152FPc 15" TFT LCD Flat Panel...

1 Answer

Dark LCD screen. Very faint image.


Internally it has a inverter board which go bad sometimes or due to heat sometimes get unpluged.So you will have to open it make sure when you do there is no power going to it.Look at the wires make sure they are snug and try again.
good Luck

Oct 04, 2009 | ViewSonic VA720 17" LCD Flat Panel Monitor

1 Answer

ACER AL 2017 goes dark after half second of image.


I had the same problem with the same monitor. You could see the image, but extremely faintly. In my case, the problem ended up being the inverter board (Delta DAC-12M033), which I found refurbished on Ebay for $45.00. Takes about 30 minutes and about 15 screws to replace, if you are handy in that department. Just my $0.02 worth. Hope that helps!

Oct 02, 2009 | Acer AL2017 20" LCD Monitor

1 Answer

Dark screen


click on start>control pannal>adobe gamma> set ur

Jan 18, 2009 | Dell Inspiron 5150 Notebook

2 Answers

Dell inspiron 5150 dark screen, faint image in background


If it showed a pinkish tint on the screen before it went out it could be the backlite. If you can see a faint screen when you turn the room lights out it chuld be the inverter. Inverters are cheap ... a used one for around $8 on ebay. Try that first. Make sure that you buy the EXACT model that is presently in your laptop.

Jan 14, 2009 | Dell Inspiron 5150 Notebook

1 Answer

Syncmaster 226bw goes black


If you can still faintly see data on your screen, it will be a faulty backlight in the panel most likely.

LCD panels have fluorescent tubes in them that provide the light needed to see the data. If one of these goes faulty, the circuit that drives it will turn off ALL the backlights, giving you a black screen.
Note: a faulty circuit that drives the backlights will often give the same apparent fault.
You will need to take the monitor in for repair.

Jun 23, 2008 | Samsung SyncMaster 214T 21.3" LCD Monitor

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