Some users have had problems with the Macintosh SE and Macintosh Plus when
they install static column RAM rather than dynamic RAM. These two
computers can only use dynamic RAM. This explains why:
- The video display is affected, and the operation of the machine is
not.
- The SIMMs passed QA at the manufacturer and the SIMM tester at Xerox.
- The same modules worked in the Macintosh II and did not in the
Macintosh SE; the Macintosh II can use static column RAM.
Note: the CAT and MacTest SE diagnostic tests on memory do not detect
a problem.