Question about Princeton Digital VL1918 Monitor

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How do I open my Princeton VL1918 monitor to look for bad caps? Removed all the screws but what else to I have to do to get it to open?

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Remove all the screws from the display, remove the stand, check for hidden screws under labels, soft objects etc.

After that the casing is only held in place with plastic clips, insert a plastic stick, case opening tool, flat screw driver or your fingernails in the cracks in the plastic, or openings, and move it up and down. The clips start opening, you need to go around the display, etc until you get it apart, then it will again have screws on top of the power supply and mainboard cover etc. very simple from there on.


Here is a quick video of a guy taking apart his monitor, i don't recommend the exact method of "hammering" the screen open, but you see where the display cover opens up.


http://www.youtube.com/watch?v=48cB8j-xdtw


Posted on Oct 04, 2010

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The VL1918 recently started having a long period of on-off switching when started up. It eventually starts working properly.


It may have bad caps, see my pictures here:
http://s807.photobucket.com/albums/yy352/budm/Princeton%20VL1918W/

This model can have many failed parts as you can see.
Please leave rating if it helps.

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: 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.

Feb 02, 2011 | Princeton Digital VL1918 Monitor

1 Answer

I've opened my princeton vl 1919 monitor to see if the caps are blown. I can't loosen the grey metal cover covering the boards to see the caps. I've removed the hexes on either side of the video inputs but...


Not sure if the VL1918 uses the same chassis as your, just remove the 4 screws and disconnect all the lamps connectors and other connectors.
http://s807.photobucket.com/albums/yy352/budm/Princeton%20VL1918W/
http://s807.photobucket.com/albums/yy352/budm/Princeton%20VL2018W/

Can you post the pictures? so I can see what it is about.
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Please leave rating if it helps.

Jan 06, 2011 | Princeton Digital VL1919 19" Monitor

1 Answer

New computer - monitor is ticking on and off. Monitor is the secondary monitor. Sounds like a ticking time bomb - is very annoying. Once I get it going (usually a hard boot), it will stay on. Any advice


This VL1918 series can have bad caps, transistors, transformer as shown in my pictures here:
http://s807.photobucket.com/albums/yy352/budm/Princeton%20VL1918W/
You need to check them out.
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 PRINCETON 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

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.

Dec 07, 2010 | Princeton Digital VL1918 Monitor

1 Answer

Hello I can't get anything on my screen except


Your PC is putting too high resolution for he VL1918 to display.
You need to set your PC video out put to the native resolution of the VL1918, which is 1280x1024 @60Hz.
You will have to hook up your old monitor (crt type?) and set the new resolution.
Or boot up in safe mode (hit f8 during boot up), and set the resolution to 640 x 480, reboot into regular mode, then rest the resolution to 1280x1024 260Hz.
Also watch out for bad caps in this monitor: http://s807.photobucket.com/albums/yy352/budm/Princeton%20VL1918W/

Apr 07, 2010 | Princeton Digital VL1918 Monitor

2 Answers

My LCD Monitor is blinking on & off constantly


It may need a different outlet, if it is not getting proper power. Small chance that the video cable has gone bad, but more likely the monitor is damaged. But try those two things and call Princeton.

Jul 12, 2009 | Princeton Digital VL1717 LCD Monitor

1 Answer

How is the cover removed from the Princeton VL1918


Theres sort of clips that clips to the side of the monitor's frame, use a flat screwdrive to care fully push through the sides of the LCD to unlock the clips.

Nov 15, 2008 | Princeton Digital VL1918 Monitor

1 Answer

Princeton monitor


check www.badcaps.net - they have a tutorial on their site for replacing caps, it's for motherboards- but the technique is the same.

I ordered caps for the Princeton Monitor VL1918 from Mouser.com and got their item # 647-UHE1E471MPD6
.

The 470uf 25v caps size- 10x16 mm

Mar 11, 2008 | Princeton Digital VL1918 Monitor

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