Can you block it off with furniture? Or, a toddler fence? How about closing the door and making the room off-limits? You could cover it with a blanket so she can't see it -- out of sight is out of mind? Or, you could distract her with something else in another room. I suppose it would be expecting too much to ask her parents to keep her away.
If all else fails, I would move the turntable and suffer the inconvenience of repositioning it back afterwards. Perhaps it could be easily elevated on a portable support. Good luck.
If all else fails, I would move the turntable and suffer the inconvenience of repositioning it back afterwards. Perhaps it could be easily elevated on a portable support. Good luck.