Wayne Stewart wrote:
It's definitely a problem on the Disk II card. After the first ULN2003 blew, I just replaced the chip and promptly fried it too. At that point I wondered if it was the drive or the card so I dug out one of each. A new drive connected to the old card promptly blew it's ULN2003 too. After replacing the ULN2003s both drives functioned normally with the new card.
Did the cable stay the same? -michael NadaNet and AppleCrate II: parallel computing for Apple II computers! Home page: http://home.comcast.net/~mjmahon "The wastebasket is our most important design tool--and it's seriously underused."