Akai AP-206 Repair Revisited

I have learned a number of things that prompted me to take a second look at my Akai, and, I wasn't really happy with my first investigation into the noise problem. I also needed to correct some comments I made in the previous video. In the process of doing this, I discovered something that has been wrong with it since before I owned it. The discovery comes at the end of the video. I think you will find it very interesting. I was rather surprised.

[@deltadigger2833]

Cool video

[@oldelectronicsfan5136]

Thank you

[@markberry2969]

I always thought as the "rock on a stick" ie the diamond styli is dragged over the grooves in a vinyl record as both are non-metal they produce static electricity fields or "static" and it is this that needs to be grounded?

[@oldelectronicsfan5136]

No, the static is real and if it is really bad can cause noise but, grounding won't help that. The record sits on a rubber mat which insulates it from the platter, which is typically grounded. The real problem is that you have a noise source, the motor, and you have a low voltage signal that requires a great deal of amplification. Without proper grounding, the noise from the motor and hum that comes from other sources gets amplified to objectionable levels.