Hello Doobie06,
Thank you for reaching out and sharing your feedback about your Samsung microwave. I understand you're having issues with your microwave as it's very loud and the turntable is grinding. We do apologize for the inconvenience this has caused you. We are here to help.
To help you with this, I am providing this link https://www.samsung.com/us/support/troubleshooting/TSG01001968/ to guide you on the issue.
You can also check this link https://www.samsung.com/us/support/troubleshooting/TSG01001970/ if your turntable des not rotate and is making noise.
Another link you may find useful is this one https://www.samsung.com/us/support/search/?query=microwave&referrerPageUrl=https%3A%2F%2Fwww.samsung.com%2Fus%2Fsupport%2F as it has all the troubleshooting guides, links, videos, and other resources you might need for your Samsung microwave.
Should you need more assistance, please feel free to get back to us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Your reference number is 1144534483.
-Noraina