Laplace-Beltrami operator on sphere.

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Suppose that we have solution of

$$\delta d f = g$$

on sphere. Where $\delta d$ is Laplace-de Rham operator for functions, $f,g$ are scalar functions and $g$ has support on north hemisphere and it is non-negative there.

Than by Stokes theorem we have(I think that I have signs wrong but that does not solve the problem)

$$ \int_{\text{equator}}*df = \int_{\text{north hemisphere}} d*df = - \int_{\text{south hemisphere}} d*df$$

But $$ \int_{\text{north hemisphere}} d*df = \int_{\text{north hemisphere}} *g \neq 0 $$ $$ \int_{\text{south hemisphere}} d*df = \int_{\text{south hemisphere}} *g = 0$$

What have I done wrong?? I can't really see it.

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There is no solution. By Stokes's Theorem, since the sphere $S$ is compact, $$\pm\int_S \star g = \int_S d{\star}df = \int_{\partial S} \star df = 0\,,$$ since $\partial S = \emptyset$.