Hi.
I’m not sure to understand your issue well. But if it is something like “the solenoid makes a scratching noise when activated”, I think it’s a common failure for those decks to have the core of the solenoid, twisted and then seized into the coils. I remember something like that.
Google Beogram 5500 repair, and you should find more info on this.
SOrry if this is not related to your problem.