Personally I think all the options that are available all have their own shortcoming. With that said I like your idea of having someone (a professional) test and make a diagnoses regarding the problem.
I have no idea what type of equipment is needed or who does that type of work. I guess I'd start by phoning some good electricians in your area and see what their recommendations are. I know I'm not suggesting anything that you didn't already think of but I'm hopping you will keep us posted on this forum regarding your findings.
I have no idea what type of equipment is needed or who does that type of work. I guess I'd start by phoning some good electricians in your area and see what their recommendations are. I know I'm not suggesting anything that you didn't already think of but I'm hopping you will keep us posted on this forum regarding your findings.