Like the post title says, I can't seem to connect to one of my three Viper 200 drives but can connect to the other two without issue. Also, I was able to connect to this drive a few weeks ago and haven't made any changes that should cause me problems. Oddly, the drive will run my axis just fine when I'm instructing it to do so via mach 3. As far as I can tell, there's nothing wrong with it, other than not being able to connect (which is preventing me from tuning it). Any ideas on what I could try? I'm pretty handy with a multimeter and a soldering iron if it comes to that. ...Or is it a pretty clear case of having to ship it in for repairs? Thanks.