  We consider the effect of a random magnetic field in the convective zone of
the Sun on resonant neutrino spin-flavour oscillations. The expected signals in
the different experiments (SK, GALLEX-SAGE,Homestake) are obtained as a
function of the level of noise, regular magnetic field and neutrino mixing
parameters. Previous results obtained for small mixing and ad-hoc regular
magnetic profiles are reobtained. We find that
  MSW regions are stable up to very large levels of noise
  (P=0.7-0.8) and they are acceptable from the point of view of antineutrino
production. For strong noise any parameter region $(\Delta m^2, \sin^2
2\theta)$ is excluded: this model of noisy magnetic field is not compatible
with particle physics solutions to the SNP. scenario.
