I have an old Sony 5-disc CD player. It wasn't working when I got it. Cracked the lid and the issue appears to be that the motors are worn down. This unit is maybe 10+ years old and in 2nd or 3rd hand condition. My question is whether it's the motors that are worn down or the power supply. I suspect the motors due to their mechanical nature but the behavior (sluggishness) suggests that perhaps they aren't getting enough power. Open to suggestions and tests that could be run.