MACBOOK DON'T CONNECT WITH LG FLATRON LCD DISPLAY

Hi friends!
I bought a LG FLATRON LCD DISPLAY Model M1994A.
My Macbook 13" have a 10.5.6 Leopard.
The fact is when connect de Macbook with LCD screen thru VGA cable and miniDVI adapter. Plug the miniDVI adapter, and the screen of Macbook blinking forever at the blue screen; the lcd has the message "NO SIGNAL"
If I unplug the miniDVI adapter, everything gets back to normal on the macbook screen. I plug it again, I get the blinking blue screen.
Tried rebooting, unplugging everything else from the external screen, no luck.
If I boot the macbook with the external screen on and the macbook closed, then it is recognized a little bit: appears the apple boot screen then blinking, but when I want to use both screens, it will blink again.
HELP ME PLEASE!!!
Regards from Chile!

May not be any help but, I have the LG W1952TQ and it works great with my MacBook. You may try going to system prefs, click on displays, then click on Detect Displays and see if that works, I had to play with the resolutions some and ended up selecting 1152 X 864 setting for mine.
Hope this helps ya,
Barry

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MACBOOK DON'T CONNECT WITH LG FLATRON LCD DISPLAY

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