Does not boot with known bootable floppy disk or with the 200MB hard drive. Screen (mono) works. Power supply (included) works. Has VGA and phone ports. Powers on but floppy drive does not work. We tried several floppy disks that boot in other computers.

It is a proprietary floppy drive. A floppy drive from a non-working TX436S laptop or something similar may work in it.

The power supply, which powers it on, is labelled MODEL TSA1, 12V 1.5A, 10V 1.3A Made in Taiwan

The laptop was sold with a 200MB hard drive. but it also does not boot. Perhaps you can make a bootable drive for it in another computer that uses the same type of hard drive (which was used in 1992) to replace the hard drive.

We had no way to test:

VGA, serial, and parallel ports.
Audio adjustment dials.
Port for plugging in telephone cable (to use with modem).

I see three screws affixing the bottom to the rest of the laptop.

The Ni-Cad battery died and was recycled properly.

No physical damage to the exterior.

TX436 1992 laptop dead floppy drive (Ann Arbor near Hillside Terr.)