Display mirroring doesn't fit on external monitor

I have a Philips FlatTV that is 1280x720 and a new MacBook that is 1280x800.
When I connect the external monitor, the top, bottom and left side of the screen are truncated. The right side is aligned to the edge. I lose about 1" of the display image on the left side, the Menu bar on the top and the little lights under programs in the dock.
Are there any adjustments to be made to get the full MacBook image on the external monitor? Can't find and TV adjustments that would address this.

Finally stumbled on the solution.
There is an option in Display Preferences, Options tab. It is the Overscan checkbox (default checked). Just uncheck it and the screen will not be cut off.

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