Hello
I have an aiwa HS-PX537, only the logical commande don't works.
when i press play bouton the playing don't work is the same for he stop fonction is don't work if i m playing a cassette.
I know that the cassette playeur work because i can run the play fonction with pushing a mechanical plasic part ...
I have sound and the reverse fonction work well to.
i have testing with multimeter that switch button for play and stop fonction works too. So i m thinking that the logical circuit have a problems.
I have only open the back case and i can see the back of PCB. I m searching the manual service for see how to disasembled the machine and also look the circuit part.
I m thinking to that some caps need to changed because i have found a blue-green residue under the cas and the PCB

Thank you for your help and sorry for my poor english