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I connect my Dell inspiron 1750 to my 47" LG LCD TV with a VGA cable and the TV does not recognize the signal. I had it working once, but a setting on the laptop was changed and when I changed it back, it no longer worked.

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The setting for the resolution of the tv is set to a value that the tv doesn't support. Open the Display properties and change it to 800x600, this will work for sure. Than raise it one step at a time till it breaks.

Posted on Nov 15, 2010

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Connect it the same way you did before, with the VGA cable. Then hit Fn + F8 on your keyboard, to switch the signal from your laptop screen to the VGA cable. Then select VGA as your source on your TV as you did before.

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