Place the slipmat back onto the platter, and try a record.

If the automatic start/stop function still does not work properly, the turntable would likely need to be sent in for repair. Please follow the instructions found in the warranty/repair section at the bottom of www.audio-technica.com

If you are sending the turntable in for repair - DO NOT SHIP ANY ACCESSORIES (DUST COVER, HINGES, BELT, PLATTER, SLIPMAT, OR CABLES). IMPROPER SHIPPING CAN CAUSE NON-REPAIRABLE DAMAGE TO THE TURNTABLE.