Lcd model L1928NV takes 2 to 3 dozen times turning on and off to get image stays on momentarily or stays on at times get message "no signal input" any ideas

replace the mainboard

Acer produces a number of LCD computer monitors. Acer's monitors range from 17 inches to 27 inches. Some monitors offer wide-screen viewing, embedded speakers, high-definition visuals, and various display connection ports. Acer computer monitor problems include common issues such as dead pixels, error messages, and blank screens caused by incorrect connections. Some reviewers have also detected image problems with DVD playback on some models.

"Input Not Supported" Error Message Acer computer monitors such as the G24 may issue an "Input Not Supported" error message when users set the display resolution too high. The G24's maximum display resolution is 1920x1200 with a 60Hz refresh rate. Maximum resolutions vary according to the specific monitor model and according to the capabilities of the computer's video card. b> "Input Out of Range" b> Some Acer computer monitors may report an "Input Out of Range" error message due to incorrectly set monitor refresh rates. Much like the display resolution, each monitor also has specific monitor refresh rates with which it is compatible. Blank Screen or "No Signal" Error b> Like other monitors, Acer computer monitors feature color-coded power indicator lights. If the power indicator light shows green, the contrast or brightness levels may be set too low and should be adjusted via the OnScreen Display. If this does not rid the monitor of a black screen, the monitor may be experiencing hardware failure. The "No Signal" or "Check Cable message" may indicate a problem with the monitor's cable connection with the video card. This error may also appear on a blank screen backdrop if the monitor is plugged into the incorrect port on the computer or if the computer is frozen and needs to be rebooted. Faulty power cords or outlets may cause the screen to be black and to show no power indicator color. b> Image Issues b> Some review sites such as CNET have reported problems with streaking and ghosting during DVD playback on some Acer computer monitors such as the AL1931. (A "ghost" is an identical offset image as the primary or desired image.) Unstable or unclear image issues may be caused by incorrectly programmed VGA timings or incorrectly installed monitor drivers. b> Dead Pixels b> Dead pixels and sub-pixels can cause a variety of display enjoyment problems. Acer will only accept returns on LCD computer monitors that have "more than four (4) defective pixels per million pixels." Further, the central area of the monitor may have no more than one defective pixel. Acer does not differentiate in warranty terms between pixels and sub-pixels. Hope this helps.

hi,
u can sellect input by following setup

1. Press INPUT. on remote
(A list of selectable sources appears).
2. Press INPUT again to select the input
source.
( An image from the selected source automatically
displays).
Each time INPUT is pressed, the input source
toggles.

If the image does not come in clearly from the external
equipment connected to INPUT 1 or 2, you may need
to change the input signal type setting on the "Input
Select" menu.

1. Press MENU to display the MENU screen,
and then press c/d button (on remote) to select "Option".

2.Press a/b button (on remote) to select "Input Select", and then
press ENTER.

3.Press a/b button (on remote) to select the signal type you
want to set, and then press ENTER.
4.Press MENU to exit.

just try these. need further help feel free to contact.
ok.

Most likely you should be on input 1. Try changing that and it should work

The message input signal means no signal is being feed to the monitor.
Check the cable use to connect the monitor to the video card.. fix and secure the connection.
If the computer is reading and you know its working, check the video card.
Turn off the CPU disconnect the video card from the motherboard and reconnect.
Try to open your CPU and see if it reacts with your monitor. If nothing happens replace your video card

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, 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 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://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague

Press once the Input button. The menu appears. Press the Input button again and hold it. Now this is reduced to the problem of blocking the Input button (holding it with something). (Not very technical but then again neither is the restart when the computer blocks :D) Cheers

If your television is displaying a blue screen or no signal message and then turning off, your TV may be at an inactive input. Here's how you can get back to watching your TV:
1. Powering on your TV and press the INPUT button on the VIZIO remote control repeatedly until a picture re-appears.
2. If this does not work, try again but press the button slower this time.

I got this off the vizio website.

timberline did you reset the tv to factory setting this may solve the problem

i just spoke to a tech guy and his solution worked for us. turn everything off including the dvd player or whatever you have in your video inputs.

pull the tv power cord out from the back for 30 seconds. plug the cord back in. turn on the set for 30 seconds. then turn on your dvd player. you should now see a picture.

we had something funky happen to our cable the day the set starting giving us trouble. pulling the power cord apparently allows the tv to reset.

good luck.