My green power light comes on but my monitor will not display. If i push the menu or auto button it comes on and displays and then come back out. I am using my old monitor to write this and work on the web Thank you for your help Jim
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You need a new backlight inverter board. If you dissasemble the monitor you will see a circuit board with 4 2-wire connectors connected to it. This is the board you need to replace. Typically they run from $15 to $40. Usually just easier to replace the monitor. Another idea is to reduce brightness levels on the monitor in the menu while looking at it with your flashlight. Then power off then power on the monitor and it might stay on longer.
I was called to repair similar incident last week. A Compaq box (don't remember the model) with a 'smart' usb keyboard. By this I mean that the keyboard had a row of what I'll call hot buttons. The client had pushed a button with a moon on it causing the monitor to go into sleep mode. I suspect that whatever key you pushed had the same effect.
After plugging a known good monitor into the faulty box I verified that the box was OK. This left me to think the monitor itself had a problem. Plugged the suspect monitor into a known good machine.. and it worked fine!!!
Set machine and monitor to original configuration and still had no video. Decided that the monitor was too smart for its own good and maybe there was something in the monitors menu. Pushed and held the 'menu' button on the monitor for a few seconds and menu comes forward. Green power led also comes on (surprising me) so I powered up the computer and lo and behold the problem is fixed!
ok, get to the event where you get this to happen "...then turn it back on the monitor does come on normally...", but just after power-up, press the F8 key to go to safe mode. If nothing visible, press ENTER anyway...get to safe mode yet?
Follow these steps to solve the problem...
Make sure that the moniter power button is off.
Unplug monitor from mains ( the auto exit button should flash red after about five seconds and you hear a popping sound.)
plug monitor back in mains.
hold down + and - on the monitor
now hold down power button on monitor
let go of power when power button when the green led lights up
let go of + and - buttons
wait a few seconds and press menu, a hidden menu will appear in the top right
use the + and - buttons to move the highlighted option over the auto colour option in the menu
push the menu button.