The Mego 2XL Robot is an interesting piece from the very beginning of interactive electronic toys. The 1970s 2XL incorporated little more than a modified 8-track player to provide hours of entertainment on specially-formatted cassette tapes. In this Mego 2XL teardown, we'll look at how the toy was built, the basic working mechanism, and attempt to diagnose a 2XL not working.
RESOURCES (IN ATTACHED ZIP)
US Patent 4078316
ED1402 data sheet
LM386 data sheet