franklyn
Active member
I successfully repaired my Macintosh IIsi ...
... but I noticed that the computer has a problem with the PRAM, it always loses the settings it has made after switching it off and rarely but not.
What could be the error and where should I look?
IIsi fault ...
I have a IIsi that works before fine and now it take some time until the sound of dead sounds up. The motherboard looks good except for a little oxidation on the four 74ALS245 chips. I desoldered these all and cleaned everything up and checked connections and soldered on four new chips but the...
68kmla.org
What could be the error and where should I look?