Question about LG L1930B 19" LCD Monitor

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Monitor suddenly goes black

Working on line. Monitor suddenly goes black. The green button is flashing - and nothing else I do works. Have disconnected and reconnected all cables. Yet screen still black and green light still blinking. Pressing the other buttons does nothing. Seems as if it is in permanent sleep mode. I changed nothing. I do not know enough about computers to change things. Working and then - bam ! black screen.

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Re: Monitor suddenly goes black

Is this monitor and LCD flat Panel? If so this is due to a bad power supply, an inverter board going bad or LCD backlight bulb blown. When the backlight goes bad it gets just enough power to start up, but when it is on for a long period of time it goes black because the bulb is not stable enough to hold the charge because it is going bad. These bulbs can be changed, but they also can be costly!

Posted on Nov 26, 2007

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Monitor suddenly went black.If on/off button pushed screensaver briefly flashes on but then back to black screen.Green power light is on but nothing on screen when using computer


Try to replace all bad capacitor on power inverter board and turn it on. Hope it will work perfectly.

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Hi I wonder if you can help me. I have the flatron L1918S monitor and it was working fine yesterday, however today when i turned on the pc, the monitor flashed the green light on and then goes into power...

When after power up the computer press num lock key if num lock led is flash on and off when you press num lock key then your cpu is working fine.But if it stay constant then open cpu cabinet cover then reconnect RAM memory and processor and it's fan pull cmos cell from motherboard for 10 minutes then reconnect it then check.Make sure motherboard is not ground with cabinet. If num lock led is on and off then when you power up the computer press F8 key 5 to 6 times so you can see safe mode and other menu then enter in "Enable vga mode" then go to display property ->settings change screen resolution to 1024*768 then apply and ok. then check. If everything are fine in cpu then your monitor need repairing. Let me know if you need further assistance. Thanks for using FixYa.

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The monitor will not turn on. When power button

First--was it working?
Did it suddenly stop?
When you see the LG logo, then it goes away, does the power light turn from green to amber? Sounds like that doesn't happen.
So--if you are getting a signal, you should see something.
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1 Answer

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The power light is flashing green can indicate start/restart of the power supply due to shorts circuits or failing power supply due to bad caps, look for bad caps with bulging top first, see example of failed monitors due to bad caps:
Post back what you see insdie so we can guide you furhter.

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Dell E172FPb monitor black screen green flashing power button


We have a dis-assebly and repair guide posted on our web site at:
The problem is usually the driver transistors, our guide shows where they are and what to replace to get your monitor back running again.

I hope this helps, If so please rate my solution.

Corporate Computer

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Internal power supply is hurting. It is a non linear supply and they switcher transisters are not working

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Sounds like a bad solder joint on the printed circuit board. Once it heats up then it no longer makes good contact and the monitor goes black until it cools down and makes contact again. You could resolder it if you knew where it was but monitors are dangerous to go playing around with as they can hold very high charges of electricity in their capacitors that are very dangerous. It's a throw away world. Go buy a new one.

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