Question about Westinghouse L1975NW Monitor

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Model L1975NW - almost no display. VERY faint display visible. Too dark to even make out any images. Problem started a few weeks ago when monitor would sometimes fail to start up when PC did. Eventually quit altogether. Please advise.

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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

1 Answer

L1975NW monitor will power on but no image will come up. computer works with older monitor.


When you power up the computer press F8 key 5 to 6 times so you can see safe mode and other menu then enter in "enable vga mode" then go to display property in control panel.Then change screen resolution to 1024*768 then apply you can also change the display from there. You can change desktop background and other display settings from start menu->control panel->display.. Let me know if you need further assistance. Thanks for using FixYa.

Aug 28, 2010 | Westinghouse L1975NW Monitor

1 Answer

Viewsonic vp2000s LCD computer monitor - no image displayed; possible backlight outage.


It is possible that the backlight has quit working. Use a flashlight, held at an angle to the display, to see if there is a faint image visible. If so, then have backlight repaired. Otherwise, try a different input / cable.

Aug 17, 2010 | ViewSonic VP2000s 20.1" Flat Panel LCD...

2 Answers

L1975NW Monitor: My monitor is very dark; too dark to even see how ...


More likely the backlight is not on, check the caps (leaking/bulging tops) in the power supply first, then check the fuse in the inverter circuits, when the caps went out it may have taken out the MOSFET for the inverter transformer with it. See failed WESTINGHOUSE and other monitors due to bad caps.
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

May 16, 2010 | Westinghouse L1975NW Monitor

1 Answer

Hello, My Samsung monitor(Model 740N) blanked out suddenly. I tried to restart and nothing appeared on the screen. I am not able to go in the safe mode too as nothing is visible. While the system...


If you can see the screen image very faintly, the backlight system has shut down. This can be due to a component failure (driver transistor, transformer, or ccfl tube) or action by the backlight controller. Without disassembly and more information (test results) from within it is not possible to diagnose further.

Apr 24, 2010 | Samsung SyncMaster 720N Monitor

1 Answer

Dell Latituse D600 display goes dark


Hello,

The picture board on your monitor is faulty or bad, since it goes black after few seconds, it means the picture board of your laptop has developed fault.

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

Take care.

Apr 21, 2010 | Dell Latitude D600 Notebook

2 Answers

Monitor is blank but green lightis on L1975NW


LCD Display/ control board Defective, send to repair

Dec 28, 2009 | Westinghouse L1975NW Monitor

1 Answer

I turn the computer on and the monitor will stay dark even though it is turned on. Then I turn the monitor on and off a few (10) times and eventualy the poicture comes through. I have the monitor hooked to...


It may be caused by 2 reasons:

1. The notebook is not correctly configured for an external display - you may need to install the display drivers or update it.

2. The backlight inverter on the display may have problems and need repairs. Check if you can see a faint image in the screen.

Oct 10, 2009 | Samsung SyncMaster 203B LCD Monitor

1 Answer

Display won't stay visible


If you can see the moving image faintly then it sounds like a problem with the backlight on the screen. Backlights can fail, but usually a cause is an impact of some kind.

Dec 26, 2006 | Sony VAIO PCV-W20 PC Desktop

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