20 Most Recent Westinghouse L2046NV Monitor Questions & Answers

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http://www.fixya.com/support/t835580-no_image_monitor_westinghouse_l2046nv

Look here.

Hope this helps some : https://www.youtube.com/watch?v=HgJlJ3b7jAQ

If you have text information/data coming up on the screen before it shuts down, you most likely have a capacitor problem either in the Main Power Supply or an Auxilliary panel. You need to be prepared for a serious dismantling and troubleshooting project OR take it to a place that has such diagnostic equipment to repair such a problem. Doesn't sound like a software issue at all. Hope this helps at least some. . . .

http://legacywd.com/pdf/104_User_Manual.pdf

Hello,

It bothers me, when a user comes to a Fix It web site like this and I have to suggest you send it in for warranty replacement or service.

But, we can check a few things first just to be certain is isn't the circuitry turning itself off due to a problem on the power or signal board. First look at the back cover of your panel for a pull out or unlock release to relese the back panel that covers the power plug and VGA socket. Remove that if needed. Examine where the power plug inserts and the VGA cable attaches onto the flat panel chassis. On the power plug, see that it is firmly inserted. I'm almost certain you've checked this already but when you have it firmly in place do you notice any wiggle room or wobble of the plug in its socket? If so, that would be a problem of the mount to the power inverter board. Next, check that the VGA cable is firmly attached by using a small flat head screw driver to tighten down the cable into its plug. Then, remove the VGA cable and check each pin on the plug to see that there isn't a loose one or one that is bent. If you find a bent one, do not attempt to starigthen it yourself. Take it to a tech shop where they have tools for this.

If both the the power plug and VGA socket seem fine, lets examine the function of the power button next. This is what we call a momentary on/off push button, meaning you momentarily close a circuit when you push the button and this impulse energizes the power to the panel or de-energizes the power board. You want to check that this momentary button is not sticking in, but fully releasing. You can most easily assure this is this case by flicking the button. Push in on the button from the edge using your fingernail and letting your fingernail slip over the button. If the button appears to fully extend back up when you do this than it is not sticking in the down position and the monitor is not turning itself off as a safety feature.

Your monitor usually is turning itself off as a safety feature when after turning it on it turns off a few seconds later. It does this to protect itself and your investment. So, if after doing these things you find no irregularities, let me know and I'll assist you in getting warranty service.

Regards,
Worldvet

Bad fuse cheeper to buy new

Hey there.
I have recently written a tip on the Flickering/unstable LCD/CRT monitor screen problem. I suggest you give it a read and let me know how it goes.
You can see my tip here: http://www.fixya.com/support/r9423506-flickering_lcd_crt_monitor_screen_or

Enjoy my tip.
Slasher_X

"Most" newer monitors will let you know if the are no longer receiving a signal. Sounds like the backlight is burnt out. Try getting a bright (LED works best) flashlight and shining it at the screen at all angles to see if you can see any of what you were doing. If the backlight is on the fritz, either return it on warranty or buy a new one.

Please read here:
http://www.avsforum.com/avs-vb/showthread.php?t=1113012

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.com Parts: http://interliquidparts.com/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

You may want to get the capacitor kit, but you need to get the board number used in your monitor version.
Eample of the kit:
http://cgi.ebay.com/Westinghouse-L2046NV-REPAIR-KIT-LCD-Monitor-DAC-19M005-/320608826408

I will not use RadioShack caps, since they are not low ESR type which is required for switching power supply, they will not last if you use generic electrolytic caps.

You should remove one cap at a time so you can see what the value is for each cap.

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.com Parts: http://interliquidparts.com/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

The VGA inputs on these things can be a bit flaky. The DVI inputs work pretty well. I'm going to guess you're using the VGA input, given the problems you're having. There really isn't a fix, as far as I've been able to find.

You need to inpsect the power supply/inverter board for bad caps with domed tops first.
If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, 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 Westinghouse monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/ Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you. Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

sounds like your power board is going bad. you will probably need to replace it. also try unplugging it for about 20 minutes see if it turns on for longer if it doesnt then it is your power board. sorry for the bad news how that wont affect my rating