Repairing a 1986 Sanyo stereo system whose cassette deck got stopped by a pause button mechanism trying to escape. If your pause button is non-functional, this video will show you how to fix it. Also I show what that weird "beat cut" button actually does!
I forgot to mention, if the parts of your pause button mechanism are missing or broken, you can transplant them from almost any cassette recorder with a Tanashin-style mechanism -- even new ones made today -- since the design has been pretty much standardized since the 1980s. But even with a new cap installed, you'll still need to glue it in place to keep it from popping off again.