Apple Lisa 2/5

Seek advice, give advice or tell others about your repair and restoration projects

Apple Lisa 2/5

Postby max1227 on Thu Sep 08, 2016 5:43 am

Hello,

I got hold of a Lisa 2/5 that has suffered from the usual corrosion on the I/O board. I cleaned it up and now it boots to the self-test screen, however, it sometimes shows error 52 on startup and sometimes it doesn't? I know this error relates to the COP421 chip if that helps, but I don't understand why this error is intermittent. Anyway, when it does boot I get to the floppy screen and can insert a floppy and begin the boot process. This always seems to stall at a certain point and throw out another error. I know the disk is good and the floppy drive has been cleaned. I also get the same issue if I boot off a ProFile. It starts booting and then stops and shows error 10741. The ProFile is also 100% working. I get error 10735 for the floppy disk.

Any ideas,
Max1227
max1227
 
Posts: 2
Joined: Tue Aug 16, 2016 10:47 pm

Re: Apple Lisa 2/5

Postby tezza on Thu Sep 08, 2016 4:14 pm

Lisas can be tricky, temperamental beasts..especially if they've had battery damage. I sent you a private reply on this in response to your PM. Good luck in tracking the fault down.
Tez (Terry Stewart) (Administrator)
Collection: http://www.classic-computers.org.nz/col ... /index.htm
Projects and Articles: http://www.classic-computers.org.nz/blog/index.htm
Twitter: @classiccomputNZ | YouTube: Terry Stewart
Trade Me: tezza5
tezza
Site Admin
 
Posts: 2291
Joined: Thu Jan 01, 1970 12:00 pm
Location: Palmerston North, New Zealand


Return to Repair and Restoration

Who is online

Users browsing this forum: No registered users and 1 guest

cron