Sony TCM-190RB12AL Cassette Mechanism.

[Turnip]

Have a Sony TC-H4900 Dual Cassette with the above mechanism. Usually just a belts and rollers job.

RH side OK but LH side only runs on one direction, in the other it cuts in seconds as the opto notices the LH spool isn't moving due to slack tape.

Note on 'stop' the LH spool spins giving a loop, but can't make out why. If I present the tape with no slack it works OK until stop pressed - Wonder if anyone has had the issue ?  - Chris.