Yes, I have tried those methods, I thought you were refering to a method discussed in a sticky or something I may have missed in this forum.
The <.< was a sign that I wasnt sure what your comment had to do with the original question, not that I hadnt previously tried to jump the batteries.
The unit already will not turn on while on battery power. My MZ-NH1 will flash the battery charging symbol and CHG:--- min before popping up with 00min and shutting down. The unit plays perfectly fine without a battery when I have it in the dock, so its not the unit (unless its the battery contacts w