Sony Walkman WM-FX141 Personal Cassette Player "keeps shutting" Questions

panasonic cassette player no auto shut off i just bought it without realizing it does not shut off. anything i can do? it's almost impossible to find these here so i would like to keep it. try google.

...keeps shutting off. argggg new cassette recorder/player shuts off (with used/new cassettes). tried several cassettes thinking the ribbon too tight. not so. any advice on this jurassic device??? thanx ...