From the MIT AI Lab file .INFO.; LISP ARCHIV for Maclisp updates:
THE CURRENT VERSION OF LISP, "LISP 102", HAS
THE FOLLOWING AS-YET UNDOCUMENTED FEATURES:
1)"DEFUN" IS AN FSUBR USED TO DEFINE
FUNCTIONS. EXAMPLES ARE
(DEFUN ONECONS (X) (CONS 1 X))
WHICH IS EQUIVALENT TO
(LAMBDA (X) (CONS ...
I would say that it is more likely that the laptop was shelved because it's internal power circuit is at least partially shorted. This would explain the symptoms observed from the power supply LED. I, personally, have run into several laptops that had this problem.
I would test the power supply under some sort of resistive load, such as a 12 Volt ...
I think you have a fake or mislabelled adapter.
These symptoms seem to me to be those of a cheap adapter that's browning out when it's trying to supply the current the laptop wants at the voltage it wants, which is something that fake or mislabelled adapters would certainly do.