My HP vs15/vs17/vs19 LCD monitor just stopped coming on. No problems previously, no distortion, perfect and one day it went to sleep and never came back on. We rebooted, checked wiring, etc. Any suggestions?

what kind of monitor is it? if it an HP vs15, vs17, vs19 bad caps(capacitors) are the prob.

It may have gone into sleep because it does not detect the video signal from the PC or it has problem inside, you need to try it with another PC first and make sure to set the PC Video resolution not higher tahn the native resolution of this monitor: 1024 x 768 260Hz.

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

Hopefully it is not lamp assemblies as shown in my albums (both VS17 and VS19 have bad lamp assemblies problem due to poor soldering works)
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, 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 HP monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

You need thin flat blade screw driver to crack open the case, it is almost the same as VS19, more likely to havebad caps with bulging tops, see pictures here: http://s807.photobucket.com/albums/yy352/budm/HP%20VS19D/

It can be the power supply is getting bad, it will get to the point where it will not start at all, look for bad caps with bulging top, it mat have the same chassis as VS19. It can also be bad connection on the lamps, see http://s807.photobucket.com/albums/yy352/budm/HP%20VS19D/

I just fixed VS19 which more likely to be the same chassis as VS17, one of the lamps was bad, it had bad soldering works on it. You may want to look at the power supply first jsut to be sure it is not bad caps problem. Lamp repair is very complicated (LCD panel had to be disassembled). see eaxmple of what I just fixed yesterday: http://s807.photobucket.com/albums/yy352/budm/HP%20VS19D/
Post back what you see inside so we can guide you further.

Hello

This monitor has 5 capacitors in the power supply that age prematurely. I can repair this for $50.00 +parts + shipping. Or you can take it to a local repairperson.

Please check first if your LCD monitor is still under Warranty period, if yes, then I recommend to bring the unit to authorized service center to properly diagnose & fix the problem, because if you open it yourself & probably broken its seal then the Warranty will be Void & other problem/s that may arise / found will no longer be covered by their free service / part replacement.

If no longer covered by a Warranty, then you can open it by yourself, by turning (counterclockwise) its lock screws to open its back cover & check the power button connections if loose/broken. regards

Hi...there,
Could it be your backlight inverter it burnt out... cuz there no sleep mode in the LCD monitor.

Monitor is dead. The LCD inverter board probably went out and needs replacing. More than likely, it will cost you over $100 to get it fixed. It's better to spend the money on a new monitor.