CD4052B used as Audio Source Selector in Philips RR596

[elec_sham]

Dear All,

Please Cassette Tape moves but no sound only hissing output. The Selector switch is wired around IC CD4052B for Cassette-Tuner-CD. Can any one help with the basic circuit diagram and application for audio source and/or complete circuit diagram of Philips Radio Cassette Recorder Model: RR 596.

Thanks in advance.

Regards,
elec_sham