Posted By
JamesC
on 2002-07-21
|  Update
Jim, I swapped drive mechanisms so that the 1541 mechanism (with an optical sensor) was on the 1551 board. Not only did I get a corrupted directory but the whole mess smelled hot. (Okay I work with appliances and electronics for a living, so I can smell heat  )
The 1541 mechanism was a working mechanism before I put it on the 1551 board.
I put everything back and my 1551 still acts like I described above.
Examining the 1551 board, the three wires that wire back to the optical sensor (purple, white, blue) have no circuit traces from the connector to a chip on the board. They seem to go to ground.
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