Professional repair SID/climate control panel – experiences?

Hello, after my SID says goodbye more and more and I appreciate more in the meantime than read the question arises to me if I might have the SID repaired by a professional? There are such offers, for example, in the bay. Are there any experiences or recommendations about this? Wouldn’t want to proceed according to the Try and Error method, self-explanatory and a new one should not be. Thanks and greeting Jürgen