Sony HCD EH15 won't change stations... - Sony Audio Players & Recorders

https://diagramasde.com/blog/102776/hcd-n555av-pdf-hcd-n555av-pdf.html

Hi Jose, do you have connected the card with the AM and FM antennas on your Sony HCD EC55?
If this is the case and you cannot tune in, you have problems in the tuning module
Find a specialized Sony technical service
I hope you can solve the problem
Regards Franco Dosil

Hola Jose, tienes conectado la ficha con las antenas de AM y FM en tu Sony HCD EC55?
Si es asi y no puedes sintonizar nada, tienes problemas en el modulo de sintonia
Busca un servicio tecnico especializado Sony
Espero puedas resolver el problema
Saludos Franco Dosil

https://www.manualslib.com/manual/510640/Sony-Mhc-Ec55.html

Click link and download manual:
https://servicemanuals.us/sony/audio/hcd-rv222da-hcd-rv333da-hcd-rv555da-mhc-rv222da-mhc-rv333da-mhc-rv555da.html

https://community.sony.co.uk/t5/home-cinema-projectors-players/how-to-repair-sony-hcd-zux10d-dvd-deck-receiver-always-display/td-p/2295791

Sony HCD-GN1300D AUTO FUNCTION CHANGE

Hi try unpluging it wait 30 secs and try again

Usually that is caused by a bad amp IC. Normally on this model, you would just replace the entire main pcb.

The laser pickup assembly has a short causing the unit to shut down, The whole assembly would need to be replaced in order to resolve, not worth the cost to repair, cheaper to replace.

HI. that grinding sound is signaling a lens assembly issue. the linkage and gear assembly seems to be jammed. this assembly must be able to move freely i order for the lens to track the CD. if the lens assembly is stripped or jammed, it will not be able to read and it will shutdown into stand by mode to prevent the motor from damaging itself. its most likely gear failure.

Unfortunately, the repair parts for this unit are only available from sony repair depots and, you will need to contact sony manufacturing in order to receive a repair ticket.