My neighbor has a monitor that won't turn on. When it is turned on, it flashes <monitor going to sleep" That is all it does and we can't get to the desktop to try and correct this.

so working on super old 2007 PC monitors. and no PC connected."? it is NOT ANY LED BACK LAMP monitor here.
came new with XP PC's.
the monitos all good to sleep mode if no PC vidoeo connected.
in the usa, even by law, (energy star)
how ever lacking a PC, the screen will show "no signal entering sleep mode"
VGA monitor.
LED = blue on, amber sleep, LED out, oFF.
NO 1080P mode allowed, (so common now) <<<< big clue here.
set the PC to 1024 x 768 (to test ) 60Hz.
using a flash light (torch) tool,.
turn on Monitor, see blue LED
point flash light to screen, see data, now, on sceen in the beam
now you now CCFL backlamps are dead. as most are this old.


Display Modes (Resolution)

640 x 350
720 x 400
640 x 480
800 x 600
832 x 624
1024 x 768
1152 x 870
1152 x 900
1280 x 1024
1440 x 900

proof BELOW. A FREE MANUAL TOO.
page 47, see 4, CCFL jacks and HV supplies here 600VDC
free service manual with full schematics and BOM

https://elektrotanya.com/lg_w1934s_flatron.pdf/download.html


in my shop I have VGA signal generator to maKE WORK EASY.

A monitor does not normally save any states such as sleep. If unplugging the monitor from the power source for ten to twenty minutes and re-plugging it in does not fix the problem check and see if the monitor's menu comes up.
Even in sleep mode, the menu for the monitor should show. If it does, try resetting the monitor to factory default settings. If the menu does not show up, then there is an issue with the monitor.

3-blinks by the SONY TV error code indicates that there is an audio circuit problem, ether is a shorted audio amp IC on the main board, or the power supply that supply the power to the audio amp section is defective.

is built in flash up when doing this?

Try downloading IE8, Also I Suggest Update your Adobe Flash Player and Java script to clear your
cache, cookies, and browsing history. If all eles fale's try using yahoo classic email. Please rate my answer. Best of luck to you.

Right-button click anywhere on your computer's "wallpaper".
Click Properties.
Click the Screen Saver tab.
In the "wait" window, change the time-interval before it "locks" (due to inactivity).

Does it do the same when you use this monitor with other PC, new VGA cable, just need to narrow down the problem first before start taking the monitor apart.
See pictures of what usually goes bad (mostly failed capacitors) with monitors:
http://s807.photobucket.com/home/budm/allalbums
Post back what you find so we can guide you further

Try going to the control panel after clicking on the start button and it will have an icon that says "power options", there will be options there for the sleep functions for the monitor etc.

I turned on my computer and the monitor displayed this message on the screen "going to sleep no input received". I checked the power cord and unplugged it, nothing. No lights are flashing or beeping sounds. The CPU is working just fine, anyone have any idea what to do