Mike Boyd adds:
The IMSAI would not accept some of the MITS memory
boards, it came with a small schematic of a couple of gates that you had
to "splice" on the back of the front panel since the S-100
standard had not really been finalized.
IMSAI has also accidently shipped some of the kits with backwards stud
diodes in the kits which caused the power supply to charge the large caps
BACKWARDS and had some of them blow up.
The WORST part about the IMSAI is that the power switch was 110, and the
power supply ran two large wires to the upper right of the front panel
board, I remember getting shocked many times while working on the unit; I
was talking to a customer and laid the front panel down on the power
supply and ran 110vac thru the 8v unreg system.
The front panel artwork was a piece of printed film you would place behind
the front panel, it would always "crinkle" and look awfull - you
could also rub your hand back and forth and sometimes the static would
cause the front panel to "crash".