from stop it will not ffw or revs. from play it ffw and revs. scuffed and cleaned pinch roller. belt is ok. inserted and ejected tape 20 times to check that cam gear stopped at same place every time.could it be some type of sensors under wheels? put in dummy tape press ffw; pinch roller contacts capstan;it spins a little; pinch roller pulls away ; capstan stops spinning then machine shuts off.
