A:Answer Hello there,
I understand your frustration regarding the locked doors on your oven and the need to retrieve the serial number for servicing. It's inconvenient when your appliance doesn't function as expected, especially when you need assistance.
To locate the serial number for your oven, you can typically find it on a metal plate or sticker attached to the appliance itself. This plate is usually inside the oven around the door frame or on the side or back of the stove. Additionally, you may find the serial number printed on a label inside the owner's manual that came with your oven.
To unlock the doors, please see page 21 under the "Display" and page 22 under "Control Lockout" of the manual for more details.
Manual
https://downloadcenter.samsung.com/content/UM/201904/20190417153210498/NV51K7770S_AA_DG68-00857A-03_EN-MES-CFR.pdf
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
When you message us, please provide us with this reference number (1147121871) so that our team can gather your information.
Have a great day.
^Charles