[Techman]

I think I may have read through your thread and some others when I was doing a bit of research a while back, but couldn't find anything specific on the model that I have. Surprisingly, I seem to remember that I found reference to the Chinese at one time making a modern replica of this megger.

Mine doesn't read down to infinity when cranking with nothing connected and always gives a small reading down that end of the scale, which leads me to suspecting this capacitor issue. It didn't do this when I first got it, so looks like it hadn't been used in many years and once put to use it had set the capacitor off leaking, as you might expect.