Lightmapping Bake produced odd result

The two pictures show the before and after Baking on Lightmapping. For some reason the base and the bezel around the screen has come out completely black as if it is being shaddowed.

Any ideas on the cause please?

Before After

Fixed it. The main thing was the UV mappings were probably not right. Re-did the unwrap.

I also selected "UV Lightmap" on the import but I'm not really sure if that did anything.

Here is the result:

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