I picked up a Lisa 2/5 that was modified and sold by Sun Remarketing. It has the H ROMs and does not have the square pixel screen modification. Interestingly, it has both the 800K floppy drive and the Sun Remarketing 20MB hard drive, a Kalok KL-320. The internal hard drive has a hand-written sticker indicating that LOS 7/7 was installed on it in 1989
Unfortunately, it retained its original batteries until today when I removed them. As such, the I/O board is likely ruined, and the motherboard has probably sustained significant damage as well. I plan on first trying to repair those, and replacing them if a repair is not feasible.
A couple of questions!
First, does LOS have any issues with the 800K floppy drive? I thought that these originally shipped on Macintosh XLs with MacWorks, but apparently Sun Remarketing shipped them on LOS 7/7 machines that have H ROMs and lack the square pixel mod (like this machine). I suspect that the Sun Remarketing ROM on the I/O board allows LOS to work with the 800K floppy drive, and perhaps it ignores the top side of the floppy disk? Using only the 400K and read/write head on the lower side, like a 400K drive?
Second, if the motherboard is damaged beyond repair, is it possible to replace it with a Lisa 2/10 motherboard and a 2/10 I/O board and retain 800K drive functionality? I realize I would also need a 2/10 cable harness and would subsequently have to replace the hard drive with i.e. an X/ProFile, but I like the idea of having a full 800K drive available to MacWorks. Maybe this is a bridge too far...
Lastly, the I/O board has a bodge wire running from a capacitor at C33 to another point on the board at or near R43. Corrosion from the battery leak has caused this bodge wire to loosen from the board
, and I am unsure where it was originally soldered. Anyone know where that loose end should be? EDIT: It attaches to the solder pad between R43 and C45. Interestingly, ALL of my Lisa 2/5 I/O boards have this same bodge wire connection. Never noticed that before.
Thanks in advance.