Litton microwave repair and replacement parts are available online at Parts Dr, Bonanza, Good Appliance and Repair Clinic, as of March 2015. The overall selection is limited, with Repair Clinic having the largest number of parts.
Repair parts on Repair Clinic include screws, nuts, touch-up paint, sealant and fuses. Replacement parts include light bulbs, magnetrons and transformers.
Parts Dr's selection includes a light switch kit, light bulb and touch-up paint. Bonanza and Good Appliance have two parts between them: a capacitor and a control panel, respectively.
Litton has not made microwaves since some time in the 1980s, so repair and replacement parts for those units are sparse.