While you wait for answers, we may have found some information which could help you.
Click here for Cassette Deck Beltsold silver sony walkman cassette player [WM-EX-808HG] needs help?
How do I remove a jammed cassette from a stereo tape deck?
Sony tc-wr565 problems?
Where is best place to buy Sony cassette deck belts?
Sony WM-D6C Walkman Pro Drive belt needed?
Sony Cassette Recorder TCM 939 bad volume and pickup?