MPC3000 high pitched noise from the headphone jack + SCSI..

I had this problem without having a scsi2sd reader, only solution was to change the headphone ground.

I meant to update my fix that worked from everyone’s inputs in this thread.
I soldered in a blue wire to ground the Artmix/Stratos Technology's RaizenMonster SCSI CF card reader. No more hum.

I'm having this same problem. What is the other side of that blue cable connected to?

Thank you

otoc wrote:I'm having this same problem. What is the other side of that blue cable connected to?

Thank you

It's just a cable connected to the plate for grounding.