William Heckel wrote:
"Michael J. Mahon" <mjmahon@aol.com> wrote in message qYOdndb5g7MMMXfZnZ2dnUVZ_q2dnZ2d@comcast.com">news:qYOdndb5g7MMMXfZnZ2dnUVZ_q2dnZ2d@comcast.com...William Heckel wrote:I am looking for a No Slot Clock for my //e. I had one in it back from the late 80's but the NSC no longer works, I even tried replacing the battery. Any ideas where there might be some of the No Slot Clock chip available. I don't remember who made them originally.They were just repackaged Dallas Semiconductor "phantom" clock chips. They are still made by Dallas/Maxim. BTW, how did you try to replace the batteries (there are two)--they are pretty well potted.
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I thought I did it very very carefully, but I may have nuked the chip in the process.
How did you gain access to the batteries? The only process I have seen for splicing in a new cell (the two on the original chip are actually ORed together with diodes) involved access through the slot in the socket and cutting a trace on the tiny PC board and soldering a couple of wires to vias on the board. The two lithium cells are under the pc board, and potted in place, so it would seem hard to get to them directly. -michael New, faster SUDOKU v2.0 solver for Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."