Daewoo LM2230W monitor

[matthmal]

Hi,

I have a Daewoo LM2230W monitor which was working fine till a few days ago. The monitor turns the screen black after a few minutes of use. The Power LED remains on and if I disconnect the VGA and re-connect it again it works again for a few minutes.

Any clue of what could be wrong with my monitor pls?

Regards,
Matt

[budm]

Re: Daewoo LM2230W monitor

You can start with this:
https://www.badcaps.net/forum/showthread.php?t=39740

[matthmal]

Re: Daewoo LM2230W monitor

Apologies.... kindly find attached the photos of the boards from front and back

[matthmal]

Re: Daewoo LM2230W monitor

Any suggestions please?

Thanks,
Matt

[Agent24]

Re: Daewoo LM2230W monitor

Have you checked if the image is still on the screen when it goes black? Shine a bright torch onto the panel and see if you can see the picture. You may need to wait for night or do it in a darkened room.

If the power LED is still on but the screen goes dark, it is likely the backlights are shutting down while the image processor is still working.

[matthmal]

Re: Daewoo LM2230W monitor

I haven't checked that yet, will check and will let you know

[matthmal]

Re: Daewoo LM2230W monitor

Hi, I checked the monitor as you said and unfortunately i cannot see anything with a torch

[matthmal]

Re: Daewoo LM2230W monitor

any help please? i really need to fix this monitor.

[budm]

Re: Daewoo LM2230W monitor

What DCV do you have on that white connector CN2 of the power supply/inverter board when the monitor stop working? You may have lamp problems, you can try turning down the brightness as low as possible to see if the backlights will stay on longer.
12V =
5V =
5V =
GND
GND
ON =
DIM =

[matthmal]

Re: Daewoo LM2230W monitor

What DCV do you have on that white connector CN2 of the power supply/inverter board when the monitor stop working? You may have lamp problems, you can try turning down the brightness as low as possible to see if the backlights will stay on longer.
12V =
5V =
5V =
GND
GND
ON =
DIM =

Hi,

You were right, turning down the brightness as low as possible does make a difference. It stays longer twice the time. Will try to get the readings tonight.

Thanks for your help, will keep you posted