Question about Princeton Digital VL1918 Monitor

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Princeton 19" lcd vl1918 BACKLIGHT replacement

The monitor turns on but remains dark, the power light comes on and i can see activity on the screen when i press menu but only with a flashlight. since all of the backlights are out at once is this a driver circuit trouble or do i need to replace the lights?

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On the bottom of your monitor or on the right side is a set of buttons one is for brightness and contrast try to reset the brightness and then contrast. If this does not work you may need a new monitor.

Posted on Jan 25, 2009

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1 Answer

Describe your (VL1916) 19" LCD


Did you try this monitor with another PC and already verify that the VGA cable is OK.
Common problem with Princeton monitors are due to bad DC filter capacitors in the power supply board, see example here:

http://s807.photobucket.com/albums/yy352/budm/PRINCETON/

Sep 10, 2011 | Princeton Digital VL1916 19" LCD Monitor

1 Answer

Service Manual with Schematics for Princeton VL1916 LCD Monitor


this issue might not be because of your Monitor. Anyway, I can only provide manual to this legacy product of princeton if you want...

Sep 06, 2007 | Princeton Digital VL1916 19" LCD Monitor

1 Answer

Monitor takes forever to come up the blue light flashes and flashes for a long time I read where the vl1918 needed a capacitor replacment what do you think


blackbeard1, Could be it needs Filter caps. I would also closely investigate all solder connections of surface and through hole mounted electronic components for possible "frosty looking" "cold" solder joints that may be thermally intermittant!! 12fix louie

Feb 04, 2010 | Princeton Digital VL1916 19" LCD Monitor

1 Answer

Dead. External power supply is good 12V but monitor wont turn on.


my 12 power supply was only 500ma, not the 4a needed. Got the monitor to power up but now the screen goes dark after 2 sec. Looks like a bad backlight issue. I'll replace the inverter board.

thanks

Dec 08, 2009 | Princeton Digital LCD17 17" Flat Panel LCD...

1 Answer

Monitor comes on, then goes back off, rinse, repeat.


Well here is a test you can do. When the monitor goes black, take a flash light and hold at it a angle towards the monitor, if you can still faintly see the image then you have a blacklight/inverter issue. Another common issue with this is the capacitors on the inside. They will also cause this. If you dont see an image then the inverter will need replacing. As the steps for replacing all of this are quite long, ill post a few helpful tuts :).

For replacing the backlight:
http://www.inventgeek.com/Projects/shorts/overview.aspx
For checking/replacing bad capacitors:
http://www.wizardanswers.com/liquidvideorepair.html

I know these arent your monitor but its generally the same idea with all of them. If this doesnt work it will be a inverter issue and if it comes to that just let me know and ill be glad to help :D


Jul 14, 2009 | Princeton Digital VL1918 Monitor

2 Answers

Same problem


Check the Inverter card Connector which goes to pannel,Next Panel to AD card signal Cabble,..

Jul 10, 2009 | Princeton Digital VL1918 Monitor

1 Answer

I have a Princeton VL1918 LCD monitor. Need help


Hello,

You have a monitor with a common problem. After a few years some LCD monitors will blow a power supply. The problem is caused by parts called capacitors overheating in the confined space of he monitor. If you are good at electronics repair/soldering you can usually fix he problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htm You can take the back cover off your monitor and look for the bad parts, replace any that look like the pictues and your monitor should work fine. The capacitors do need to be installed with the correct + and - connections, note the stripe on the old one and insert the new one the same way. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping. If you don't see any bad capacitors then the next thing would be bad CFL (backlight tubes) in the screen itself. If it is that then the monitor needs to be replaced because of the tech skills needed to replace then. I hope this helps, if so please rate my solution.

Buddy
Corporate Computer
www.ccl-la.com
Over 21 years of computer and printer support/repair

Jun 29, 2009 | Princeton Digital VL1918 Monitor

1 Answer

Vl1918 backlight replacement


this is not a driver issue. There is a hardware problem. You will have to replace the lights, or purchase a new monitor.

Please rate me.

Thanks and good luck, let me know how it turns out.

Feb 02, 2009 | Princeton Digital VL1918 Monitor

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