Hey All- I think I have successfully fixed my Dolphin S200 that stopped moving a couple weeks ago. The problem was wear on the spindles of some of the gears in the transmission attached to the drive motor. It got bad enough that the gears would get jammed when the robot transitioned from forwards to backwards. Since you can't get parts for these (at a reasonable price anyway) I Macgyvered my own fix using a little bit of brass tubing. I made a blog post about it with details and pictures that hopefully some of you will find helpful if you are facing the same problem. (Moderators- I hope my link is allowed. It isn't a commercial blog and I have no ads and make no money from it, this just seemed easier than trying to upload all the pictures and instructions here)
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