Originally posted by kennyboy:
One solution to the problem could be the E! board and it would also give some extra functionality to my dx7. Unfortunately they are very hard to find these days, I assume.
The MIDI problem you are seeing is very strange and sounds more like a circuit problem than a software problem in which case adding an E! board probably wouldn't help and I don't think your chances of finding one of those a very good. About the only one you would be likely to get would be buying another DX7 with one installed.
While I don't think removing the battery will solve the problem you may as well try it.