29" LG monitor went black and won't turn back on

SOURCE: screen dead

since it's only 3weeks old as long as you have the receipt take it back .
Mark

Posted on Apr 18, 2009

Bud Martin

• 11361 Answers

SOURCE: My LCD LG Flatron monitor

More likely to have failed power supply due to bad caps, that will be the first place to look.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm

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

Posted on Nov 22, 2010

SOURCE: LG Monitor won't turn on

I had this same problem with mine, and had to replace it. Sometimes it's the power supply, but depending on how old it is and how much it's been used, usually unlikely.
If you have a way to check the power supply output for proper current and voltage, and it appears to be fine then that's eliminated as a possibility.
Typically, time to replace it, unfortunately.
I hope this helps!

Posted on Feb 13, 2012