DuoDisk Help

[ebattalio@tamu.edu]

   Is there a doctor in the house?  My Duodisk is on the fritz.

   The patient turns up when the //e is turned on, spins like it
   wants to read a disk, but does not read ANY disk.  Control-Break
   stops the drive, pr#6 starts it, but no reads.  Period.   

   I have a spare Duo, so I hooked it up.  Works fine.  Tried a
   different controller card.  Did not fix it.  Pulled the duo
   card from the good duo drive and put it in the bad and viola -
   the bad drive works.  Put the duo card from the bad duo into the
   good and yep, you guessed it, no dice.

   So I am guessing it is one of the many chips on the duo board.
   It is #820-5002-2 from 1983, not as clean as the newer board
   from the duo that works, but the chips are similar (?).

   What is the prognosis, Doctor?  Should I replace a particular
   chip first or replace them all? 

   Post any RX's here or send to me.  Thanks.

Eric B. (ebattalio@tamu.edu)