7 Apr
2013
7 Apr
'13
10:20 a.m.
On Sun, 7 Apr 2013, Santo Nucifora wrote:
Even with bad caps, I tried both motherboards but no
luck. I had checked
most of the traces on the I/O board and found that I had to push in pins on
the COP421 to make contact. I've replaced the socket since and could power
up the Lisa with one of the motherboards!. After replacing the COP421
socket, my I/O board seems to be semi-working. My original Lisa 2/5 with
the DEC CRT works fine (note for those who have bad burn-in) but I get an
I/O board "Error 52" and that's where I am today. I think I may need a
COP421 but that is kinda difficult to find and locating this is no
guarantee that the I/O board is okay.
It's worth keeping an eye on eBay. I picked up a 2/10 I/O board at a
reasonable price last fall. The 2/10 board can be made to work in a 2/5
by performing minor surgery on the "Lisa Lite" floppy interface board.
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