I've got an RD53 which isn't playing very well with one of my MicroVAX
II's.  It's quite possible that the drive is actually dead, but I don't
want to give up on it just yet.  Is it the RD53 which tends to suffer from
mechanical problems?  Also, there's a jumper block on the back side of the
drive which I'm not certain if it's configured correctly.  Facing the
backside of the drive, mine is jumped as follows:

    : | : : | |

      D S   W W
    4 3 2 1 2 1

-brian.
---
Brian "JARAI" Chase | http://world.std.com/~bdc/ | VAXZilla LIVES!!!