I have a monitor that i am trying to fix for someone or at least diagnose.
First time I plugged it in, i got no power, the green LED did not going. After trying a different socket, I got the green LED to light up for 1 second and then nothing again since then. I can hear it make a noise each time i initially plug it in and unplug it.
I took apart the monitor to see if I could notice anything unplugged and nothing looked out of the ordinary.
Could you describe how you got it apart? i've got the same problem, and i feel like i'm going to crack it just to get it open...i've mostly tried pulling the back off from the bottom after removing the 2 screws
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If your monitor doesn't turn on, and you are sure of the power supply (some plug directly into the wall and some use a power adapter), then you can assume that the monitor has failed. You can fix it (replace the power supply in the monitor itself or possibly the on/off switch), have it fixed by someone who knows how to do this, or buy a new monitor. First, of course, be sure the problem is your monitor and not the computer. If the monitor light turns green and then yellow, you can assume it's the computer. If the monitor light doesn't go on at all, it's the monitor.
Check to make sure the monitor is securely connected to the computer. If in doubt, disconnect the monitor from the computer then reconnect. Try powering up and see if that fixes the problem. If your machine is a desktop system, the graphics card may be loose, so you might want to have someone check that. If those two things check out ok, then check the monitor power cord by plugging it into a different outlet socket. Good luck!
A couple things to consider ... Are you certain the monitor is plugged in ... is there power in the outlet/power strip ... is the power strip turned on ... can you try another outlet close by ... is the power light on the monitor lit? Are both ends of the video connection connected? Are you using on-board video adapter or a adapter card? Is it properly plugged in. Do you have a second monitor you can temporarily connect to your tower? (like a lap top that you can connect with a VGA cable?) Can you try your monitor with someone elise's computer? If your monitor doesn't work on another known good computer ... it could be your monitor needs replaced.
i’ve been repairing lcd monitor for awhile If you can or know someone that can take the monitor apart. check the power supply for caps that are bubbled there are bad. If you know how replace if not and know someone that does have them replaced. that should fix your problem the inverter circuit may or may not be on that power supply. if the two pair of lamp wires are plugged in then it all in one. replacing the caps work about 80% of the time. i would check and replace.
please let me know if this helps thank you.
It is the capacitor on the power to the monitor. I have replaced about 5 so for. The capacitor is like 69 cents. Open it up and look at the circuit board where the power plugs into and see if any capacitor are bubbled up. If so then its a bad capacitor.
Mine would blank just 2-3 seconds after power-on.
I pulled this monitor out of the garbage - someone threw it away. I found any old 12vdc power supply I had laying around (1 from an hp scaner 1250mA, another rated at 600mA) neither could supply the current (amps) required to run the backlights, therefore backlights shutdown, monitor goes blank--monitor stilled powered on, but black.
I tried all of the disassembly, re-solder various solder joints on the LCD Inverter board and removing the heat/magnetic shield from inside the back cover of the monitor. Nothing worked.
I bought a Segate 80gb external hard disk drive that came with a 12vdc power supply, looks like a typical laptop power supply, rated at 3A (3000mA). Plugged it to the monitor, it powered up, and it works flawlessly.
It sounds like either an internal wire is loose, or possibly in the connector to your video cable. Make sure the connections for your video cable are tight both at the computer and at the monitor. If they are, try a different cable (cables are much cheaper than monitors, always start with the easy solutions first).
If the problem is internal to the monitor, then it is up to you to decide whether to try to diagnose/fix it yourself, or buy a new monitor. The cost to pay someone else to fix it is likely more than the value of the monitor.