Dear Jim,
Thank you so much for your speedy reply. But I am afraid all that technical stuff is too complicated for me. What I can tell you is that whatever treatment I was applying with my machine, it always seemed to be targeting this specific area (as well as curing whatever I was treating), with the result that I now have open sores which I don't seem to be able to treat with anything!
What I can do, is write down all the frequencies I have been using, but then I still don't quite know what to tell the technician, if I do manage to get one to look at the machine.
When you reply to this, please write as you would,when addressing a technical nincompoop...
Best regards,
Regine